Omega Speaker Systems Network Card LCIC WIM BEN User Manual

User’s Guide

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LCIC-WIM-BEN

High Speed

Load Cell Interface Card

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Table of Contents

1.1

1.2

Introduction

General Description

Typical Applications

Installing the board in the PC

Utilities

3.1

Setup & Running

The Calibration Utility

General

3.2

3.2.1

3.2.2

3.2.3

3.2.4

3.3

The Calibrations Library

Parameters

Calibration Efficiency (CE)

The Settings Utility

The Menu Bar

3.3.1

3.3.1.1

Tools / Analog Output

Tools / Baud Rate for SCI port

Tools / General Setpoints

Parameters

3.3.1.2

3.3.1.3

3.3.2

3.3.2.1

Communication

Port

3.3.2.1.1

3.3.2.1.2

3.3.2.1.3

3.3.2.1.4

3.3.2.2

Baud Rate

RS485 Address

Get results immediately

Auto Zero

3.3.2.2.1

3.3.2.2.2

3.3.2.2.3

3.3.2.2.4

3.3.2.3

3.3.2.3.1

3.3.2.4

3.3.2.5

Activate

Max Zero

Min Zero

Time limit

Start Fill-mode

Fill-mode starts automatically upon card reset

Filtering

Filling Definition

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Programming your Application

Commands

4.1

4.2

4.3

Parameters

LCIC-WIM ActiveX

4.3.1 Start/Stop Communication

4.3.2 Variables

4.3.3 Filters

4.3.4 Fast Mode

4.3.5 Misc.

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Appendices

A. I/O & the LED Display

A.1

A.2

A.3

General Notes about the I/O

Connecting External Devices to the Inputs

LCIC-WIM I/O & Analog Out

A.4 The LED Display

B. Scaling the Load Cell Input

C. Load Cell Connections

D. USB, RS232 & RS485

D.1

D.2

D.3

D.4

D.5

Communication Parameters

Baud Rate

General RS232 Terminal

Serial Communication & PC Power On/Off

RS485

E. Fill Mode

E.1

E.2

E.3

E.4

Introduction

Hardware Inputs

Hardware Outputs

Filling Parameters

E.4.1 Filling By = Weight

E.4.1.1

E.4.1.2

E.4.1.3

E.4.1.4

E.4.1.5

Filling by Weight Parameters

Auto Tare

Valid Results Limits

Stabilization Criterion (Tare & Stop)

Lazy Filling

E.4.2 Filling By = Time

E.4.2.1

E.4.2.2

Filling by Time Parameters

Stabilization Criterion (Stop)

E.4.3 Fast Speed Config

E.4.4 The Filling Configurations Library

E.5

E.6

E.7

LED Display Notations

Commands

Error Codes

F. Specifications

F.1

F.2

F.3

F.4

F.5

F.6

Load Cell Input

A/D

Digital Inputs

Digital & Analog Outputs

Standard Interfaces

Software

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F.7

F.8

Dimensions (mm)

Misc.

G. Trouble-shooting

G.1

Card does not respond after PC power-on

H. Zero & Tare

H.1

H.2

The Zero function

The Auto-Tare function

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1. Introduction

1.1 General Description

The model LCIC-WIM is a very High Speed, Intelligent Load Cell

Interface Card with USB/RS232/RS485. Besides its basic mode – named

below as the general mode – the board includes an integral Fill Mode

supplying an independent filling control. The board is intelligent and

powerful enough for OEM customers – it is ready to accept piggy-back

modules and/or embedded applications for OEM special requirements.

1.2 Typical Applications

• Dynamic weighing – vehicles, livestock

• Dynamic force measurement

• High speed checkweighing

• High speed filling / batching

• Beltweighing

• Force measurement / Press Machines

• WIM-Monitor for analysis of dynamic systems

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2. Installing the board in the PC

(The following description refers to Windows XP. Obviously, on

another operating system it might be different.)

1. Make sure that all installation files have been copied to your

hard disk to a new folder, say, LCIC-WIM.

2. Connect the LCIC-WIM board to your PC.

3. The ‘Found New Hardware Wizard’ appears.

Select the last option like this:

Click ‘Next’.

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4. Select the second option, click ‘Next’ and browse to the

“FTDI - VCP (Virtual COM Port) Driver” folder (under the

folder where you copied the installation files in step 1).

Click ‘Next’.

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5. After a while, you’ll have this display:

Click ‘Finish’.

Notes

1. It might occur that the wizard will return to step 3,

requiring to repeat the process. This is normal, just repeat

steps 3-5.

2. You may watch the new driver in ‘Add/Remove programs’:

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3. Utilities

3.1 Setup & Running

1. Run the setup(s) of the LCIC-WIM utilities in the folders:

* LCIC-WIM-CALIBRATION

* LCIC-WIM-SETTINGS

2. Run a utility:

* If the utility reports that .Net Framework is not

installed, then run "dotnetfxV1.1.4322.exe" in the

"Microsoft Net Framework" folder on your CD.

* If the utility reports "LCIC driver is not installed", then refer

to the previous section (“Installing the board in the PC”).

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3.2 The Calibration Utility

3.2.1 General

The calibration utility (LCIC-WIM-CALIBRATION) enables to calibrate

the LCIC-WIM board adjusting it to your own system.

The utility is straightforward and is in the form of a Windows wizard. It

includes three main stages carried out in five steps.

The three stages are:

1. Show Data (step 1)

(Described below under ‘Step 1’.)

2. Pseudo Calibration (steps 2-3-4)

The calibration is called ‘pseudo’ as it won’t be saved in the

board unless the user confirms it in the next stage. As long

as the user did not confirm the new (pseudo) calibration, the

previous calibration remains in effect.

(The details are described below under ‘Step 2-3-4’.)

3. Save or Quit (step 5)

(Described below under ‘Step 5’.)

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The five calibration steps are:

Step 1 – Show Data

This step introduces both the parameters and the current readings, as

received from the board. The step is passive in the sense that it only

shows data passed by the board, but it does not make any change in the

board. Some additional parameters may be displayed in the bottom of

the “Current Board Calibration” box. Type <Ctrl>/<I> and – as shown in

the screenshot below – the additional parameters will appear, hiding the

lower original parameters (Load Cell Output, Full Load Cell(s) Capacity,

Maximum Applied Capacity and Display Resolution). In order to hide the

additional parameters and return to all the original ones, type <Ctrl>/<I>

again.

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Step 2 – Pseudo Calibration / Parameters

This step starts the calibration procedure. It enables to change calibration

parameters. Whether you changed the parameters or not, you may

proceed to the next step by pressing the ‘Next’ button.

Library issues:

1. Alternatively, you may click ‘Library’ in order to access the

library, as described in the ‘Calibrations Library’ section.

(If there are still no calibrations in the library, the ‘Library’

button will be inactive.)

2. Normally, upon confirming a new calibration it will be saved also

to the calibrations library. However, if you want to save it only

in the board, uncheck the ‘Save to Library’ box.

In the example below the user changed the Display Resolution parameter:

Notes

1.The changed parameter (Display Resolution) is displayed with

blue background.

2.The options list of the Display Resolution depends on the value

of Maximum Applied Capacity.

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Step 3 – Pseudo Calibration / Zero

This step enables to redefine the ‘zero’ level. Click ‘Skip’ if you are

satisfied with the previous definition of the ‘zero’ level. Otherwise, when

the scale is empty and stable (see note), click ‘Zero’ to sample another

‘zero’ level. Once you clicked ‘Zero’, you may either confirm the new

‘zero’ level by pressing ‘Next’, or redefine it by clicking again the ‘Zero’

button, or leave it out by clicking ‘Skip’. Please note that even if you do

confirm the new ‘zero’ level by pressing ‘Next’, its effect is limited to the

‘pseudo calibration’ stage. It will be stored in the board only if the new

calibration is confirmed in step 5.

Note

In order to know the stability, watch the Stability indicator above

the A/D reading (e.g., 99.977829% in the screenshot below).

In the example below the user clicked ‘Zero’:

Now the user has three options:

1. Confirm this ‘zero’ level (click ‘Next’);

2. Redefine the ‘zero’ level (click ‘Zero’ once more);

3. Leave out this new ‘zero’ level staying with the

previous ‘zero’ adjustment (click ‘Skip’).

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Step 4 – Pseudo Calibration / Weight

This step enables to redefine the ‘weight’ level. Click ‘Skip’ if the

previous ‘weight’ level was OK. Even if there was a fixed shift in the

weight (which you probably corrected in step 3), you don’t have to

redefine the ‘weight’ level – just click ‘Skip’. Otherwise, specify the

value of the weight, and when the weight is stable on the scale, click

‘Ready’ to sample another ‘weight’ level. Once you clicked ‘Ready’, you

may either confirm the new ‘weight’ level by pressing ‘Next’, or redefine

it by clicking again the ‘Ready’ button, or leave it out by clicking ‘Skip’.

Please note that even if you do confirm the new ‘weight’ level by

pressing ‘Next’, its effect is limited to the ‘pseudo calibration’ stage. It

will be stored in the board only if the new calibration is confirmed in step

In the example below the user specified the value of the weight

(6 kg) and clicked ‘Ready’:

Now the user has three options:

1. Confirm this ‘weight’ level (click ‘Next’);

2. Redefine the ‘weight’ level (click ‘Ready’ once more);

3. Leave out this new ‘weight’ level staying with the

previous ‘weight’ adjustment (click ‘Skip’).

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Step 5 – Save or Quit

This is the final step – here you decide whether to confirm the pseudo

calibration, or leave it out. Before you decide, you may watch the current

readings examining whether they are satisfactory.

• In case you do want to confirm the new (pseudo) calibration

(overwriting the previous calibration), press the ‘Save to

Board’ button and answer ‘Yes’ to the following question

that pops up:

• Otherwise – that is, you want to stay with the previous

calibration leaving out the ‘pseudo calibration’ – click ‘Exit’

and answer ‘Yes’ to the following question that pops up:

Please note that after saving the calibration to the board you still may

remain in the utility, which will show now board’s response after the

calibration, which is now ‘real’ and not ‘pseudo’ any more.

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3.2.2 The Calibrations Library

Each calibration that the user applies may be saved in the ‘Calibrations

Library’. Later on, the user may use that library as a short cut in order to

restore a previous calibration quickly and reliably.

The procedure is very simple:

Save

Unless the ‘Save to Library’ box is unchecked, each calibration is

automatically saved to the library upon its saving to the board in Step 5.

Its name is the ‘Calibration Name’ parameter.

Restore

In order to restore a calibration from the library to the board, press

‘Library’ in Step 2, and select the required calibration file (e.g., IMS.Lbr

in the example below). You may watch (but not change) the selected

calibration’s parameters. Clicking ‘Save to Board and Exit’ will restore

the selected calibration to the board. Unnecessary calibration may be

erased by clicking the ‘Delete’ button.

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3.2.3 Parameters

This section describes the parameters to be filled during the calibration procedure

Parameter #1: Load Cell mV/V

The mV/V output of your load cell: 1, 2 or 3 mV/V. In case the actual output is none

of these values: choosing a value higher than the actual will result in loss of

resolution; choosing a lower value may result in loss of range, that is, maximum

smaller than the real one.

Refer also to Appendix B.

Parameter #2: Unit

The desired weight unit (g, kg, ton, oz or lb).

Parameter #3: Load Cells Capacity

The maximum capacity of all the load cells in the scale system, according to

manufacturer’s specifications. If the scale system has more than one load cell, e.g.

four load cells of 10 kg then type in 40.

Parameter #4: Maximum Load

Fill in the actual full scale, i.e. the maximum load you plan to put on the scale.

Note

Keep the following condition true:

Maximum load + Dead load <= Load Cells Capacity.

The known rated mV/V value of the load cell, the Maximum load and the Load Cells

Capacity – in whatever measuring units – are required in order to calculate the

optimal gain and zero thus drastically accelerating the calibration procedure.

Parameter #5: Resolution

Select the Resolution value of the displayed weight in the selected unit (1g, 0.05kg,

etc.) that fits your application.

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3.2.4 Calibration Efficiency (CE)

The potential range of A/D points is between 0 and near ±8,400,000. The

'Calibration Efficiency' specifies what portion

of this potential range is in use. The closer it is to 100%, the

better accuracy / stability you have. However, in practice ,

100% is a theoretical number and almost not reachable .

The accuracy and stability will still be excellent even if

'Calibration Efficiency' is far lower than 100%.

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3.3 The Settings Utility

The LCIC-WIM-SETTINGS utility gives control to card’s filters, analog

output, fill mode parameters and more. The utility has three items:

• The Menu Bar

• Current Weight Display

• Parameters

The ‘Current Weight Display’ is rather obvious – it continuously shows the

actual weight. The other two items are detailed below.

3.3.1 The Menu Bar

The Menu Bar supplies some functions:

• Exit

An alternative way to quit the utility.

• Tools / Analog Output

Described below (section 3.3.1.1).

• Tools / Baud Rate for SCI port

Described below (section 3.3.1.2).

• Tools / General Setpoints

Described below (section 3.3.1.3).

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3.3.1.1 Tools / Analog Output

The ‘Settings’ utility gives access to the analog output mechanism:

Click ‘Tools’ / ‘Analog Output’.

For ‘manual’ mode uncheck the ‘Activate Auto Mode’ box.

For ‘auto’ mode check the ‘Activate Auto Mode’ box.

Manual Mode

On the top of the display, specify a desired voltage in the ‘Manual Mode’

square and click ‘Send’.

Auto Mode

Specify the following parameters:

1. Voltage Max.

2. Weight Max.

3. Weight Min.

4. Update Frequency

The Auto Mode works like this:

* When the current weight = Weight Min. or less, the analog

output is set to 0.

* When the current weight = Weight Max. or more, the analog

output is set to Voltage Max.

* When the current weight is between Weight Min. and Weight

Max., the analog output is set between 0 and Voltage Max., in

the same ratio.

* The rate of updating the analog output is depends on the

Update Frequency parameter. For example, when Update

Frequency is 4, the analog output is updated 4 times a second.

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3.3.1.2 Tools / Baud Rate for SCI port

Click ‘Tools’ / ‘Baud Rate for SCI port’ to see the current baud rate for the

RS232/RS485 serial port. It may be changed to some values between 19,200

and 115,200. (The baud rate for the USB need not be defined – usually it is

921,600.) The change will take effect only after card reset. The current

b/r used by the board for the serial communication is shown for a while on

the LED display upon card reset, prefixed by ‘Sb’ (=Serial baud rate). Do

not mix the serial b/r with the b/r shown in the Communication box – they

are not necessarily the same: The b/r in the Communication box specifies the

actual b/r in which the Settings utility is communicating with the card. If the

Settings utility communicates with the card through a serial port, the two b/r

values will indeed be the same. However, in case the Settings utility

communicates with the card through a USB port, the b/r displayed in the

Communication box will be usually 921,600, regardless of the serial b/r.

Note: Normally, the b/r in the board side will be the same as the b/r in the

PC side. However, it does happen that the communication is successful only

when the PC sets the b/r to some other value. (This anomaly might occur

only with the serial communication, not when using USB.) You may find

out the required b/r in the PC side by watching any of the supplied utilities

(Calibration, Settings or Monitor): upon the initialization they try to

communicate with the board with various values of b/r.

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3.3.1.3 Tools / General Setpoints

The LCIC-WIM board has four digital outputs. Each of them may be defined

– through the Tools / General Setpoints – either as a manual output, or as a

general setpoint output:

• A manual output is controlled by a user’s command sent from the PC

(or another computer). That is, the user sends – either by his own

application or by a general RS232 terminal (see section D.3) –

commands to turn an output on or off. The user – and not the card – has

the initiative to turn an output on or off.

• A general setpoint output is controlled by the card according to user

pre-defined criterion. Say, initially the user defined the setpoint as 10

kg, then the card automatically turns the output off/on when the

current weight is less/more than 10 kg. The user cannot explicitly turn

an output on or off by a command.

Note – these general setpoints are absolutely different from the setpoints in the

Fill mode (section E.4). The general setpoints are inactive in the Fill mode.

In order to configure an output:

• Select output’s Mode as Manual or Setpoint.

• In case you selected ‘Mode: Setpoint’, specify the setpoint value (e.g.,

10).

• Click ‘Save to Board’ to validate your new configuration.

• You may turn each manual output on or off.

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3.3.2 Parameters

The following sections describe the various parameters. After changing

parameter(s), click the ‘Save to Board’ button and wait a while until the

new value(s) are accepted by the board.

3.3.2.1 Communication

The Communication box refers to card’s communication port – either

serial or USB. The current Port and Baud Rate are shown. They are ‘read

only’, that is, not changeable. (About changing the Baud Rate for a serial

port, refer to section 3.3.1.2.) A third item (‘Get results immediately’) is a

parameter controlling card’s response in communication during the Fill

mode.

3.3.2.1.1 Port

Shows port’s type and number, e.g., “USB port COM4” or

“SCI port COM1” (SCI stands for ‘Serial Communications Interface”, that

is, RS232 or RS485).

3.3.2.1.2 Baud Rate

Specifies the actual Baud Rate in which the Settings utility is

communicating with the card. Refer also to section 3.3.1.2.

3.3.2.1.3 RS485 Address

Up to 64 LCIC-WIM boards may reside on one RS485 bus consuming

only one PC port. In case you do not need this feature, specify RS485

Address = 0; this will simplify the coding of your application. If you do

like to utilize this feature, specify the required RS485 Address – between 1

to 64.

 The address setting takes effect only upon board reset.

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3.3.2.1.4 Get results immediately

Controls card’s response in communication during a special mode, such as

the Fill mode:

When checked, the card assumes that the PC (or another remote computer)

is continuously connected and listening to the communication port.

Therefore, the card takes the initiative and sends messages to the PC,

reporting the process results immediately when they are available.

However, you might prefer the PC to poll the card from time to time

drawing the results, so that the PC can handle other tasks too. In the latter

case, uncheck the ‘Get results immediately’ option. For example, in the

Fill mode, use the ‘r’ command as described in section E.6.

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3.3.2.2 Auto Zero

The ‘Auto Zero’ optional feature supplies an automatic correction to creeps in

the zero level during a special mode (such as the fill-mode or the WIM-mode),

caused by dust, temperature etc.

When this feature is activated and the card is inside the special mode, the

board automatically clears the gross weight if some pre-defined condition is

satisfied: All readings within some ‘continuous duration’ are inside the ‘zero

range’.

Say, all readings during 3 consecutive seconds are between –1g and +2g.

These ‘continuous duration’ & ‘zero range’ are user-defined by the following

parameters.

The auto Zero effect is temporary – it expires upon the exit from the special

mode, or card reset.

3.3.2.2.1 Activate

Activates the ‘Auto Zero’ feature. When ‘Activate’ is deselected

(unchecked), an “Auto Zero’ operation will never take place.

3.3.2.2.2 Max Zero

The upper bound of the ‘zero range’ (+2g in the example).

Note: Max. Zero refers to the original zero level as was defined during the

calibration procedure.

3.3.2.2.3 Min Zero

The lower bound of the ‘zero range’ (-1g in the example).

Note: Min. Zero refers to the original zero level as was defined during the

calibration procedure.

3.3.2.2.4 Time limit

The size of the ‘continuous duration’ (3s in the example).

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3.3.2.3 Start Fill-mode

3.3.2.3.1 Fill-mode starts automatically upon card reset

When this option is activated (checked), the card starts

automatically the Fill-mode upon reset. Otherwise (the option is

unchecked), the cards ‘awakes’ in the upper level, referred to in this

document as the ‘general mode’.

Notes

1. In order to switch the card from Fill mode to General mode, use

the ‘x’ command (small ‘x’).

2. In order to switch the card from General mode to Fill mode,

use the ‘F’ command.

3. About the ‘x’, ‘F’ and other commands in Fill mode,

refer to section E.6.

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3.3.2.4 Filtering

Board’s digital filtering is used to "smooth" the read samplings by

averaging a pre-set number of the internal readings. It's especially essential

on a noisy environment, as this mechanism reduces system's susceptibility

to short interferences. The 'noise' may be either mechanical (e.g., load cell

vibrations), or electrical.

The digital filter averages the raw internal readings of the A/D, whose rate

is 52,734 A/D readings per second. The behavior of the filtering

mechanism is controlled by three parameters:

• Filter1

• Filter2

• Decimator

These three parameters, described below, are adjustable in order to make

them suit best your application.

The filtering mechanism includes two levels:

Level 1: Each N₁successive A/D readings are averaged forming the first

level average.

Level 2: Each N₂first level averages are re-averaged forming the second

level average. Unlike the N₁readings of level 1, the N₂readings of level 2

are not successive: Only each N₃-th ‘first level average’ participates in the

second level averaging procedure, the other N₃-1 ones being ignored.

As you might guess, N₁is Filter1, N₂is Filter2 and N₃is Decimator.

The range of Filter1 & Filter2 is selectable from 2 to 256, where 2 is the

lowest filtering and 256 is the highest filtering.

The range of Decimator is from 1 to 1000.

Note: As described in section 4.1, 4.2 & 4.3.2, user’s application may

select the filtering level it requests – either only Filter1, or Filter2 (=both

Filter1 & Filter2). However, the weight on board’s numeric LED

display is always after Filter2.

3.3.2.5 Filling Definition

The ‘Filling Definition’ box includes the parameters used upon a filling

operation in board’s Fill Mode, as described in section E.4.

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4. Programming your Application

The control of the board is by commands and parameters,

described below. You may either use them directly (see also

section D.3), or call an ActiveX (see section 4.3) that does the

work.

4.1 Commands

_ <c/r> signifies a carriage return.

Note about High Speed Commands:

Single character commands (where no <c/r> is required) are used for quick

direct access/control of the card.

Command

Action

a. Parameters: Read & write:

Read parameter #nn.

All values are returned in floating point scientific format,

preceded by nn<c/r> echo and appended by a c/r. E.g.,

the answer to ‘R23<c/r>’ is ‘23<c/r>2.560000e+02<c/r>’

indicating that the value of Filter1 is 256.

Rnn<c/r>

Write the value argument to parameter #nn.

Floating point values can either be normal or scientific

representation. For example 0.003 could be sent as it is or

as 3.0E-03.After the ‘Wnn<c/r>’ the board echoes

‘nn<c/r>’ and after the ‘argument<c/r>’ the board responds

‘argument<c/r>OK<c/r>’. For example, PC sends

‘W23<c/r>’, the board answers ‘23<c/r>, the PC then

sends ‘123<c/r>’ and the board answers

Wnn<c/r>argument<c/r>

(upper case W)

‘123<c/r>OK<c/r>’ changing Filter1 to 123.

b. Fast Mode: Start & stop

(the Fast Mode is not available with RS485):

Start a ‘Fast Mode’ session using Filter1 (no LED update).

Terminated by the ‘x’ command.

(lower case u)

A timer stamp is appended. Its value is the time elapsed

from start of transmission until end of transmission, in ms.

Start a ‘Fast Mode’ session using Filter2 (no LED update).

Terminated by the ‘x’ command.

(upper case U)

A timer stamp is appended. Its value is the time elapsed

from start of transmission until end of transmission, in ms.

Exit Fast Mode and return to general mode.

In order to exit the fast mode, the ‘x’ command should be

synchronised, that is, issued upon receiving a block.

(lower case x)

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c. Get a single reading of:

weight, A/D or temperature:

Get weight (after Filter2, not rounded to resolution).

Get weight (after Filter2, rounded to resolution).

Get A/D reading after Filter1.

Get A/D reading after Filter2.

Get temperature

d. Analog output: Read & write voltage:

Gets the analog output voltage (in Volts).

Sets the analog output voltage to x Volts.

The analog output voltage is measured at pin 12 of CONN6

vx<c/r>

(lower case v)

with respect to pin 13 which is ground.

e. Digital Outputs: Write outputs:

Turn on Output1 if Manual

Turn off Output1 if Manual

Turn on Output2 if Manual

Turn off Output2 if Manual

Turn on Output3 if Manual

Turn off Output3 if Manual

Turn on Output4 if Manual

Turn off Output4 if Manual

f. Digital Outputs: Read outputs:

Card returns a string of the form ‘xxxx<c/r>’, where x is

either “1” or “0” representing the status of the 4 output

opto relays OUT4,OUT3,OUT2,OUT1 respectively.

(upper case o)

g. Digital Inputs: Read inputs & toggling counter:

Card returns a string of the form 'xxxx<c/r>’, where x is

either “1” or “0” representing the digital input status of

IN4,IN3,IN2,IN1 respectively.

(upper case i)

Gets a 16 bit ‘toggling counter’. The ‘toggling counter’

increments each time when input #2 is toggled.

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h. RS485: Address selection, setting & reading

(for more details and examples refer to section D.5; except

‘Nx<c/r>’, these commands are available also in the fill mode):

Activate the board addressed x. x is between 1 and 64.

Notes

1. Wait 10 ms after sending the colon (‘:’) before

:x<c/r>

sending the rest of the command (‘x<c/r>’).

2. Wait 30 ms after sending the ‘:x<c/r>’ command

before analyzing the response(s).

“Hello” command: prompt all existing boards to respond.

Notes

1. Wait 10 ms after sending the colon (‘:’) before

:999<c/r>

sending the rest of the command (‘999<c/r>’).

2. Wait 1000 ms after sending the ‘:999<c/r>’

command before analyzing the response(s).

Read the RS485 address of the active board.

Board’s response:

’#x<c/r>’, where x is the address of the active board.

x=0 means that the board has been configured as a non-

RS485 device. Other value (between 1 & 64) specifies the

RS485 address of the active board.

Notes

1. Wait 1 second after sending the ‘n’ command.

2. If no board is active, there will be no response.

3. In case of malfunction, more than one ’#x<c/r>’ will

be responded in sequence. This is theoretically

impossible but should be checked in order to be on

the safe side.

Set the required RS485 address. x is between 0 and 64.

Board’s response: ‘OK<c/r>’.

(x=0 sets the board as a non-RS485 device; this will

facilitate your coding, as no ‘:x<c/r>’ command will be

needed.)

Nx<c/r>

Notes

1. The address setting takes effect only upon board

reset.

2. When the RS485 address is not 0, its value is shown

for a while on the LED display upon board reset.

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i. Misc.:

Manually zero the gross weight. The effect of this function

is temporary — it expires upon card reset.

Response (versions 1.12, 3.09, 6.01, 7.00 and up):

‘z’<c/r>.

z (lower case z)

Z (Upper case Z)

(versions 1.12, 3.09,

6.01, 7.00 and up)

Cancel the manual zero operation (the lower case ‘z’).

That is, return to the original calibration zero.

Response: ‘Z’<c/r>.

System reset (software reset to perform a restart as if

turned off/on).

Response (versions 1.12, 3.09, 6.01, 7.00 and up):

‘S’<c/r> - possibly followed by additional binary

character(s).

Wait 6 seconds before accessing the board again.

(upper case S)

Issue this command after changing any of the following

parameters:

* Auto transmit interval (parameter #20).

* Filters & Decimators (parameters #23-25).

* General Setpoints (parameters #101-104).

* Output modes (parameters #111-114).

Start Fill-mode.

F (upper case F)

Get version no. of DSP software.

Board’s response: “LCIC-WIM/V#.##”, where

#.## = Version Number.

V (upper case V)

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Summary of Weight & A/D Reading Commands

Reading Type

Weight

Filtering Level

Rounded

A/D

Filter1

Filter2

Not

Rounded

Resolution

Single

Reading

Fast

Mode

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4.2 Parameters

Parameter

number

Data

Type

Float

Parameter Description

Load Cell mV/V (1, 2 or 3. 0 = unknown).

Units: 0=g, 1=kg, 2=ton, 3=oz, 4=lb.

Full Load Cell(s) Capacity

Maximum Applied Capacity

Resolution Index (0-17)

Resolution Index is actually the index to an array of 18

defined values(0-17) like that:

0.0001, 0.0002, 0.0005,

0.001, 0.002, 0.005,

0.01,

0.1,

0.02, 0.05,

Float

0.2,

0.5,

10,

20,

50.

E.g., if Resolution Index=8, then system resolution =

0.05.

Calibration Date formatted as "MMDDYY".

So, 10107 <= Calibration Date <= 123199.

Calibration Time formatted as "HHMM".

So, 0 <= Calibration Time <=2359

Float

Auto transmit interval (3-52734, integer).

How many internal adc updates (52734 Hz) there are

between auto transmissions.

This gives a theoretical reading rate from 17578 per

sec to 1 per sec. (i.e. rate=52734/P20). Practically, the

actual rate for low values of P20 is usually less than

the theoretical rate. (“P20” stands for “Parameter

#20”.) Note that this rate relates to USB

Float

communication; upon using a serial port, the rate is far

smaller.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

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Filter1 value: 2-256.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

Filter2 value: 2-256.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

Decimator: 1-1000.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

General Setpoint1.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

General Setpoint2.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

General Setpoint3.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

General Setpoint4.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

Output1 Mode 0=manual, 1=general setpoint.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

Output2 Mode 0=manual, 1=general setpoint.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

Output3 Mode 0=manual, 1=general setpoint.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

Output4 Mode 0=manual, 1=general setpoint.

Becomes effective only after a system reset (either

power off/on or using the ‘S’ command).

Baud rate for the RS232/RS485 port.

Float

101

102

103

104

111

112

113

114

Possible values:

19200, 28800, 38400, 57600, 115200.

Note

115

Float

The baud rate for the USB need not be defined –

its upper limit is 921,600.

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Calibration Name (32 characters max.)

(Organised 3 characters per location; in case the

length is less than 32, the last character is followed by

a binary zero byte.)

1024-1034

Float

1053

1054

1055

1059

Analog Output Max Voltage

Analog Output Min Weight

Analog Output Max Weight

Float

Analog Output Mode (0 = Manual, 1 = Auto)

Card Serial Number (12 characters max.)

(Organised 3 characters per location, in case the

length is less than 12, the last character is followed by

a binary zero byte.)

1066-1069

Float

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4.3 LCIC-WIM ActiveX

Unless otherwise specified, a function returns a

Boolean: True for success, or False for failure.

4.3.1 Start/Stop Communication

Is_LCIC_WIM_Port(CommPortNumber)

Returns:

0 if the port does not respond.

1 if the port responds but not as an LCIC-WIM.

2 if the port responds as an LCIC-WIM.

CommPortNumber (Integer): Number of communication port.

OpenLCIC_WIM(CommPortNumber, Baud_Rate)

Opens the specified port.

CommPortNumber (Integer): Number of communication port.

Baud_Rate (Integer): Required Baud Rate (110, 300, 1200,

2400, 4800, 9600, 14400, 19200, 28800, 38400, 57600,

115200, 230400, 460800 or 921600).

(Refer also to sections 3.3.1.2 & D.2.)

Note: Using USB, all these values of Baud_Rate are

relevant (even though usually 921600 is used). However,

upon using serial communication, board’s possible b/r

values are limited to the range 19200-115200; please refer

to section 3.3.1.2.

CloseLCIC_WIM()

Closes the open port.

Get_First_Free_LCIC_WIM_PortNumber()

Returns the number of the first port (from COM1 to COM16)

that responds as an LCIC-WIM board.

If none is detected, 0 is returned.

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4.3.2 Variables

The system has variables with which the user may adjust the system to

his needs and communicate with the I/O. Actually these variables consist

of parameters, inputs and outputs. A variable may be read and sometimes

also may be written. The table below lists the variables, describes them

and specifies which of them may be also written.

The methods to read and write a variable are:

Read:

Get_Variable(r<Variable Name>)

Returns a string with the value of the variable.

r<Variable Name> is the variable name as it appears in the table below,

prefixed by ‘r’ for read, e.g., rOutput_1_Mode.

Write:

Set_Variable(w<Variable Name>, Value)

w<Variable Name> is the variable name as it appears in the table below,

prefixed by ‘w’ for write, e.g., wOutput_1_Mode.

Value is a string with the value of the value to be written to the variable.

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Variables Table

Category

Variable Name

Calibration_Name

Calibration_Date

Description

Name of calibration

Calibration date (MMDDYY).

Calibration time

Get Set

Calibration_Time

(HHMM, e.g., 1545).

Weighing unit:

Unit

ton, kg, g, lb or oz.

Weighing resolution:

0.0001, 0.0002, 0.0005, 0.001,

0.002, 0.005,

Calibration

Info

Resolution

0.01, 0.02, 0.05,

0.1, 0.2, 0.5,

1, 2, 5,

10, 20 or 50.

Full_Capacity

Full capacity of the load cell.

Maximum applied load on the

load cell.

Maximum_Load

Output of the load cell:

0 = Unknown

Load_Cell_Output

Filter1

1, 2 or 3 = 1, 2 or 3 mV/V.

There are two filters. The first filter is

basically a 1st level moving average

filter of size Filter1 (2-256). Then

depending on Decimator (1-1000),

every Decimator-th result from the 1st

level filter is put through another

moving average filter of size Filter2

(2-256), which is the second filter.

Filter2

Filtering

* Setting these three variables causes

a board reset, so it is a slow function.

Therefore, in order to set all of them

there is one more option: the method

Set_Filtering , which works faster

than three individual activations of

the Set_Variable method.

Decimator

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Variables Table (cont’d)

Category

Variable Name

Description

Current weight after Filter2,

not rounded.

Get Set

Weight_Native

Current weight after Filter2,

rounded to resolution.

Current A/D after Filter1.

Current A/D after Filter2.

The temperature measured on

the board (°C).

Weight_Rounded

Analog

Inputs

A2D_F1

A2D_F2

Temperature

Output_1_Mode

Output_2_Mode

Output_3_Mode

Output_4_Mode

Output_1_Status

Output_2_Status

Output_3_Status

Output_4_Status

0 = Manual,

1 = General Setpoint.

0 = off, 1 = on.

* The ‘Set’ is relevant only if

the corresponding

Digital

Outputs

Output_x_Mode is ‘Manual’.

Status of all outputs at once:

#₄#₃#₂#₁

Output_A_Status

#_x= Status of output x:

0 = off, 1 = on (e.g., 0101).

The weight limit for output x.

Relevant only if the

corresponding Output_x_Mode

Setpoint_1

Setpoint_2

Setpoint_3

General

Setpoints

Setpoint_4

‘General Setpoint’.

Irrelevant in Fill mode.

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Variables Table (cont’d)

Category

Variable Name

Analog_Output_M

ode

Description

Get Set

0 = Manual, 1 = Auto.

Voltage in the analog output, in

volts (0 – 2.5).

* The ‘Set’ is relevant only if

Analog_Output_Mode is

‘Manual’.

When Analog_Output_Mode =

‘Auto’:

The voltage to be supplied for

weight=Auto_Hi_Weight

(in volts, up to 2.5).

When Analog_Output_Mode =

‘Auto’:

The weight for which 0V should

be supplied.

When Analog_Output_Mode =

‘Auto’:

The weight for which maximal

voltage (=Auto_Hi_Voltage)

should be supplied.

Analog_Output_

Level

Analog

Output

(The analog

output

voltage is

measured at

pin 12 of

CONN6 with

respect to

Auto_Hi_Voltage

Auto_Lo_Weight

Auto_Hi_Weight

pin 13 which

is ground.)

Input_1_Status

Input_2_Status

Input_3_Status

Input_4_Status

0 = off, 1 = on.

Status of all inputs at once:

#₄#₃#₂#₁

Digital

Inputs

Input_A_Status

#_x= Status of input x:

0 = off, 1 = on (e.g., 0101).

A 16 bit counter that

increments when opto input

#2 is toggled.

Toggling_Counter

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Variables Table (cont’d)

Category

Variable Name

Description

Get Set

FM_Updates = Each how many

internal updates there will be a

Fast Mode transmission (3 –

52,734, integer).

The frequency of the internal

updates is 52,734 Hz.

So, the theoretical reading rate is

from 17578 per sec to 1 per sec.

(52734/FM_Updates).

Fast Mode

FM_Updates

Practically, the actual rate for

low values of FM_Updates is

usually less than the theoretical

rate.

Notes:

1. This rate relates to USB

communication; upon using

RS232, the rate is far smaller.

2. The Fast Mode is not

available with RS485.

“LCIC-WIM/V#.##”

#.## = Version Number.

Card’s serial number.

Version_ID

Misc.

Serial_Number

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4.3.3 Filters

Set_Filtering(Filter1, Filter2, Decimator)

Filter1 (Integer): 2 – 256 or 0.

Filter2 (Integer): 2 – 256 or 0.

Decimator (long): 1 – 1000 or 0.

(Refer to the ‘Filtering’ square in the variables table above.)

Set_Filtering supplies a faster way to change the filtering parameters when

more that one of them has to be changed, as the change operation causes

board reset which is time consuming; individual activations of

Set_Variable would require this time more than once. Specify ‘0’ for a

parameter that needs no change.

For example, in order to set Filter1, Filter2 & Decimator to 11, 22 & 33,

respectively, apply Set_Filtering(11, 22, 33). Now in order to change

Filter1 & Filter2 to 10 & 20, respectively, and leave Decimator unchanged,

apply Set_Filtering(10, 20, 0). Finally, in order to leave both Filter1 &

Decimator unchanged and set Filter2 to 2, apply either Set_Filtering(0, 2,

0), or Set_Variable(wFilter2, 2).

Get_Filtering(Filter1, Filter2, Decimator)

Filter1 (Integer): 2 – 256.

Filter2 (Integer): 2 – 256.

Decimator (long): 1 – 1000.

(Refer to the ‘Filtering’ square in the variables table above.)

The Get_Filtering is functionally equivalent to

Filter1 = Get_Variable(rFilter1)

Filter2 = Get_Variable(rFilter2)

Decimator = Get_Variable(rDecimator)

and has no time advantage, as the get operation does not cause board

reset; the Get_Filtering function has been supplied just for symmetry with

Set_Filtering.

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4.3.4 Fast Mode

(The Fast Mode is not available with RS485.)

During the Fast Mode there is auto high speed transmission of weight readings

to the communication. About the transmission rate, refer to the ‘Fast Mode’

square in the variables table above.

At the end, a ‘timer stamp’ is appended. Its value is the time elapsed from

start of transmission until end of transmission, in ms.

The readings that are returned in this mode are always integers and they equal

the actual weight multiplied by 1, 10, 100, 1000 or 10000, depending upon the

resolution setting. So, although the readings are integers, due to that

multiplication the original precision is maintained. The readings are not

rounded to the resolution. For example, if the resolution is 0.05, then the

readings transmitted by the board will be multiplied by 100, so that ‘123’ will

represent ‘1.23’.

Start_Fast_Mode(Filtering_Level)

Starts the Fast Mode.

Note: During the Fast Mode the LED Display is not updated.

Filtering_Level (Integer):

1 = Supply readings after Filter1.

2 = Supply readings after Filter2.

Stop_Fast_Mode()

Stops the Fast Mode.

(A timer stamp is appended. Its value is the time elapsed from start of

transmission until end of transmission, in ms.)

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The mechanism to receive the data uses events and methods as

described below:

The transmission sends blocks of information.

Stage 1

Except the last one, each block generates the event

DataArrivalInFastMode. When the event occurs, run the method

Get_CurrentBlock to read the current block. The block consists of

integer weights separated by a Carriage Return. At this stage, just store

the blocks into a string array. This stage repeats until the last block

arrives. That is, if there are 10 blocks, then ‘stage 1’ occurs 9 times.

Stage 2

The last block generates the event DataArrivalLastInFastMode. Run

the method Get_LastBlock in order to read the last portion of the integer

weights and store them too in the string array used in stage 1.

Run the method Get_Time_ms in order to get the time stamp.

Stage 3

After the last block was received and stored, the weights may be

processed:

1. Recalling that the values are separated by Carriage Return, parse the

string array and keep the individual values in a numeric array. One clean

way to do that is write the array to file by Print and read back the file

using Input. Note that a value may be split between two blocks, e.g., the

value ‘123’ may appear as ‘12’ in the end of one block and ‘3’ in the

beginning of the next block. The above way using a file handles the

parsing well.

2. As described in the beginning of this section, the values are integers

that were accepted by multiplying the actual weight by

1, 10, 100, 1000 or 10000. You may find the actual weight by

multiplying the integer weight by a “Resolution_Factor” which is

1, 0.1, 0.01, 0.001 or 0.0001, respectively. You may find the

Resolution_Factor yourself, but for your convenience there is the method

Get_Resolution_Factor which returns the proper value.

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How to work with the Fast Mode in VB using the ActiveX

During the Fast Mode process the board transmits mass data to the PC.

Therefore, in order to avoid data loss, all the actions on your PC should

be minimized.

1. Define string Array

Dim Fast_mode_Data(1 to SizeOfArray) as String

Dim fmCounter as long 'Current counter (index(

2. Select Filter:

Filter=Filter2

3. To start the Fast Mode:

Call LCICwim_commands1.Start_Fast_Mode(Filter(

4. In the event DataArrivalInFastMode:

' Get current block:

fmCounter = fmCounter + 1

Fast_mode_Data(fmCounter =(

LCICwim_commands1.Get_CurrentBlock

So, all arrived data are stored in the array Fast_mode_Data

5. To terminate the Fast Mode:

Call LCICwim_commands1.Stop_Fast_Mode

Except the last one, each block will still cause a

DataArrivalInFastMode event, as described in para. 3.

In the DataArrivalLastInFastMode event that the last block

will cause:

fmCounter = fmCounter + 1

Fast_mode_Data(fmCounter) =

LCICwim_commands1.Get_LastBlock

TotalTimeInFastMode =

LCICwim_commands1.Get_Time_ms

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Interpreting the data in a block:

Each block includes integer weight values separated by a c/r.

In order to get the real weight values, the integer values

should be multiplied by the current Resolution Factor (for

details refer to the end of stage 3, above). You may get the current

Resolution Factor using the method:

LCICwim_commands1.Get_Resolution_Factor

4.3.5 Misc.

Apply_Temporary_Zero()

Manually zero the gross weight. The effect of this function is temporary

— it expires upon card reset.

Reset_Board()

Resets the board. Usually this function is not required.

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Appendix A: I/O & the LED Display

A.1 General Notes about the I/O

* The digital I/O is available on CONN6 (15 pin Dsub).

* Digital Outputs

The outputs are opto-isolated 300mA 50V solid state relays. When

activated (status LED is on), they switch the OUTPUT x (x=1,2,3, or

4) to I/O VOLTAGE OV. Hence the load would normally be

connected between OUTPUT x and the I/O VOLTAGE+.

* Digital Inputs

The digital inputs are designed to work with either npn or contact

input devices. They are activated by an external device pulling INPUT

x (x=1,2,3,or 4) down to I/O VOLTAGE OV.

To work in this way an external IO VOLTAGE+ (in the range

10-30V) must be present.

* Analog Output

The analog output signal is set by a 16 bit DAC and appears on pin12

of CONN6. The output is with respect to the LCIC_WIM board

ground (not the I/O 0V). The board ground appears at

pin13 of CONN6. The analog output control is application dependent.

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* Connections

The following table shows the I/O pinout:

Function

Output 1

Output 2

Output 3

Output 4

Input 1

Input 2

Input 3

Input 4

I/O Voltage 0V

Analog Out Signal

Analog Out Gnd

I/O Voltage+ (10 to 30V)

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A.2 Connecting External Devices to the Inputs

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A.3 LCIC-WIM I/O & Analog Out

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A.4 The LED Display

Upon board restart, the two following messages are shown on the LED

display – each for a while:

LCIC x.xx

x.xx is board’s DSP version.

Sb yyy

yyy is current board’s Serial baud-rate

(refer to sections 3.3.1.2 & D.2).

Then the display shows the current data.

Notes

1. The weight on the LED display is always after Filter2

(refer to section 3.3.2.4).

2. In Fill-mode, the LED display shows additional information –

refer to section E.5.

3. During the Fast Mode (section 4.3.4) the LED display is not

updated.

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Appendix B: Scaling the Load Cell Input

The full scale of the input coming from the load cell may be adjusted by

the LK4 jumper (which is next to load cell connector):

• Across the two leftmost pins (default):

Load cell output is 1-2mV/V.

• Across the two rightmost pins:

Load cell output is 3mV/V.

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Appendix C: Load Cell Connections

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Appendix D: USB, RS232 & RS485

In addition to USB, The LCIC has an option for both full-duplex RS232

and half-duplex RS485 interfaces. These are brought out on CONN3, a 9

way ‘D’ type connector. The pin-out is as follows:

CONN3 PIN

FUNCTION

RS485-

RS232 TX (out)

RS232 RX (in)

SIGNAL GROUND

RS485+

i.e., for RS232 use pins 2,3 & 5 and for RS485 use pins 1,5 & 6

For RS232 connection, a standard direct (straight through) wired 9D M-F

cable can be used for direct connection to a standard 9 way ‘D’ type PC

COM port.

RS485 line termination – placing a jumper across the two rightmost pins

of LK1 puts a 120 Ohm (ac coupled) impedance across the RS485 data

lines. This should be used in single LCIC RS485 applications. In

applications where multiple LCIC boards reside on one RS485 bus, the

termination impedance should only be added on the last board on the bus.

D.1 Communication Parameters

For both the USB, the full-duplex RS232 and half-duplex RS485

interfaces, the communications parameters are fixed as follows:

Data

8 bits

None

Parity

Stop Bits

_ This is generally referred to as “8,N,1”.

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D.2 Baud Rate

For the USB, the maximal baud rate is 921,600. The board responds well

without a need to pre-define the used b/r.

For serial communication, the required b/r should be pre-defined by the

user via the Settings utility (section 3.3). The available baud rates are

between 19,200 and 115,200. The current b/r used by the board for the

serial communication is shown for a while on the LED display upon card

reset, prefixed by ‘Sb’ (=Serial baud rate). Refer also to sections 3.3.1.2

& 3.3.2.1.2.

D.3 General RS232 Terminal

You may talk with the card either by your own application or by a general

RS232 terminal. One simple one called Termite is available for free at

http://www.compuphase.com/software_termite.htm

D.4 Serial Communication & PC Power On/Off

After PC power on or off the serial communication (RS232/RS485) is

likely to drop. A card reset is needed in this case.

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D.5 RS485

Up to 64 LCIC-WIM boards may be connected to one PC port.

In the PC side, use a converter either from the RS232 port, or from the

USB port (that is, RS232 to RS485 converter, or USB to RS485

converter). In the board side, use the serial port (CONN3) – refer to the

table in the beginning of this appendix.

Using the LCIC-WIM-SETTINGS utility, each board is assigned a

unique address between 1 and 64 – refer to section 3.3.2.1.3 (never give

the same address to more than one board).

An RS485 board may be either ‘active’ or ‘inactive’. An ‘active’ board

honours all commands, while an ‘inactive’ board honours only the RS485

address handling commands. Upon board reset it ‘wakes up’ inactive. A

board starts being active when it receives its ‘activate board’ command

and stops being active when an ‘activate board’ command to any other

board is sent. Hence, only one board (at most) may be active at the same

time.

About the handling of the RS485 address while coding your application

please refer to the RS485 Commands and RS485 Responses sections

below, which expand the summary given in section 4.1/h (‘RS485:

Address selection, setting & reading’).

 When a board is configured as an RS485 device, its address

is shown for a while on the LED display upon board reset, for example

“rS.485-18” for the board addressed 18.

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RS485 Commands

Except ‘Nx<c/r>’ (paragraph d), these commands are available

also in the fill mode.

a. Activate address x (x=1, 2, 3, …, 62, 63, 64):

:x<c/r>

Board(s) response:

1. If address x is already active:

!x<c/r>

(The board reports that it is already active and has nothing to

do.)

2. If address x is not active:

2.1 If another address is currently active:

^x<c/r> (I’m going to sleep)

(The ‘falling’ board reports that it received an activation

command to another board, then it makes itself inactive.)

2.2 If address x exists:

Ax<c/r> (I’m becoming active)

(The ‘rising’ board reports that it makes itself active.)

(Please refer to the notes on the next page.)

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Notes

1. Wait 10 ms after sending the colon (‘:’) before sending the rest of the

command (‘x<c/r>’).

2. Wait 30 ms after sending the ‘:x<c/r>’ command before

analyzing the response(s).

3. There might be four cases with the conditions of 2.1 & 2.2:

#1: Both conditions are true:

Both responses will be transmitted –

first ‘^x<c/r>’ and then ‘Ax<c/r>’.

(Old address retired and address x became active.)

#2: None of the conditions is true:

There will be no response.

(No address was active before, none is active now.)

#3: Only 2.1 is true:

‘^x<c/r>’ will be transmitted.

(No address is active, as old address retired and the new

one does not exist.)

#4: Only 2.2 is true:

‘Ax<c/r>’ will be transmitted.

(Address x became active.)

4. Verify normal address switching by the ‘n’ command. In case of

unexpected response to the ‘n’ command, repeat the ‘:x<c/r>’

command. In case #1 of note 3 (which is the most frequent) this

verification is not needed, simplifying the switching procedure.

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b. Hello:

:999<c/r>

The ‘hello’ command is like a ‘who is alive?’ question.

This is useful in order to detect which addresses exist in the system.

Each existing board, whether active or not, responds ‘*x<c/r>’, where x

is its address.

Notes

1. Wait 10 ms after sending the colon (‘:’) before sending the rest of the

command (‘999<c/r>’).

2. The ‘*x<c/r>’ responses will be transmitted in sequence.

That is, if all 64 addresses exist, then first ‘*1<c/r>’ will be

transmitted, then ‘*2<c/r>’ and so on, and finally ‘*64<c/r>’.

3. The ‘hello’ command does not change the ‘active’ mode of the

address – it will remain the same as before.

4. After sending the ‘hello’ command, wait 1 second to give

chance to all 64 potential addresses to respond.

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c. Read the RS485 address of the active board:

Board’s response:

’#x<c/r>’, where x is the address of the active board.

x=0 means that the board has been configured as a non-RS485 device.

Other value (between 1 & 64) specifies the RS485 address of the active

board.

Notes

1. After sending the ‘n’ command, wait 1 second to give

chance to all 64 potential addresses to respond.

2. If no board is active, there will be no response.

3. In case of malfunction, more than one ‘#x<c/r>’ will be responded,

in sequence. This is theoretically impossible but should be checked

in order to be on the safe side. In this case re-activate the required

address by the ‘activate address’ command (paragraph a).

d. Set the specified RS485 address:

Nx<c/r>

This command sets the board’s RS485 address. x is between

0 and 64. (x=0 sets the board as a non-RS485 device; this will facilitate

your coding, as no ‘:x<c/r>’ command will be needed.) Note: When the

RS485 address is not 0, its value is shown for a while on the LED display

upon board reset.

Board’s response: ‘OK<c/r>’.

Normally a user application will never use this command, as the address

setting is carried out using the LCIC-WIM-SETTINGS utility.

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RS485 Responses

(Most responses are already described in the ‘Commands’ section.)

!x<c/r>

^x<c/r>

Address x is already active. See Commands/a/1.

Becoming inactive on behalf of address x.

See Commands/a/2.1.

Ax<c/r>

*x<c/r>

?x<c/r>

Address x becomes active. See Commands/a/2.2.

Address x is alive. See Commands/b.

A ‘:x<c/r>’ command was received but x is illegal.

That is, x is neither in the range (1,…,64), nor 999.

Address x is active. See Commands/c.

#x<c/r>

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Examples

Suppose there are 3 boards in the system, addressed 1, 2 & 3.

(The blue text is the PC side, the red text is the response from the

board(s), and the black text is our comments)

Example #1: Everything goes fine

:999

(no response as no board is active)

A1 Board #1 becomes active

Responded by board #1. Means: I (board #1) am becoming

inactive in favor of board #2, even though it’s unknown

for me whether board #2 exists or not.

A2 Responded by board #2. Means: I (board #2) am becoming

active, assuming that no other board is active.

(Note: Comments analogue to the above two ones (about ^2 and A2) are

relevant also for the other ^x and Ax commands; however, for the sake of

readability, the following comments are shorter.)

Board #2 becomes inactive in favor of board #3

A3 Board #3 becomes active

Board #3 becomes inactive in favor of board #1

A1 Board #1 becomes active

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So far everything was smooth; however, the quality of the communication

depends – besides the board and the PC – also on the environment. Hence,

there might be irregular situations that the user should know to handle –

this is what the following two examples (#2 and #3) explain.

Example #2: No response from the new board

Board #1 becomes inactive in favor of board #2

But the ‘A2’ response, telling that board #2 became active,

did not arrive! Where is the disorder? Maybe board #2 did receive the

command and is indeed active, just the ‘A2’ response was lost, and

everything is OK (case #1); but maybe board #2 did not receive the

command and no board is active (case #2). In both cases sending the ‘:2’

command again will throw light on the situation: In case #1 ‘!2’ will be

responded telling that board #2 was already active; in case #2 ‘A2’ will be

responded telling that board #2 became now active. In both cases

everything is ok and we may proceed. However, if there is no response at

all on the ‘:2’ command, repeat it say, 3 or 4 times and if there is still no

response, then there is some severe problem requiring a human action,

maybe board reset.

Note that theoretically the ‘n’ command could be used as well, but

practically it is recommended to avoid using the ‘n’ command – where

possible – for some reasons:

1. The ‘n’ command is time consuming – it requires waiting 1 second in

order to let all potential boards respond. (This is unavoidable as – by

definition – the mechanism of the ‘n’ command takes into consideration

also a faulty situation in which two (or even more) boards are active at the

same time. This mechanism ensures that the responses will arrive in

sequence and not simultaneously, therefore it consumes so much time.)

2. The conclusion derived according to the response on the ‘n’ command is

not always clear. That might require sending the ‘n’ command again,

requiring another 1 second.

3. The ‘n’ command is only informative, it does not fix anything. If it’s

possible – as in our case – to both fix a problem and get information at the

same time, then it is preferable.

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Example #3: No response from the old board

A2 Board #2 becomes active

But the ‘^2’ response, telling that board #1 became inactive,

did not arrive! Where is the disorder? Maybe board #1 did receive the

command and is indeed inactive, just the ‘^2’ response was lost, and

everything is OK (case #1); but maybe board #1 did not receive the

command and both boards are active (case #2). This is a dangerous

situation and definitely should be avoided. This problem is more

complicated than the previous one (in example #2) – sometimes re-sending

the ‘:2’ command won’t help: In case #2 re-sending the ‘:2’ command

should be responded by ‘^2’ which indicates that everything is OK. (‘!2’

will be responded as well, but this does not add us any new information.)

However, if the ‘^2’ response does not arrive, we have to use the ‘n’

command in order to make sure that we are not in the situation of two

boards active at the same time, which should be avoided. Therefore, we

should send the ‘n’ command and expect to get only ‘*2’ (and not ‘*1’).

Although it’s time consuming, we have to repeat the ‘n’ command at least

once in order to have no doubt that board #1 is really inactive.

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Board selection by the supplied utilities

The three supplied utilities – LCIC-WIM-CALIBRATION, LCIC-WIM-

SETTINGS & LCIC-WIM-MONITOR – enable easy selection of the

required board:

• Upon program start, all detected addresses are reported. Verify that

the total number of boards detected (reported at the bottom of the

display) corresponds the real number. It might occur that the

automatic detection fails to detect a board. If you know that some

board does exist although it was not detected, click its address

manually. Finally, select the board that will be activated first by

right-clicking its address (or leave the default selection) and click

‘Continue’ (or just wait).

• When you are accessing some board, usually you may switch to

another one. (In the LCIC-WIM-CALIBRATION this option is

available only in step 1.) In order to switch the active board, right

click the mouse. You’ll get a list of all existing boards, with the

active one dimmed and checked. You may select another board to

be activated by clicking its address.

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Appendix E: Fill Mode

E.1 Introduction

The LCIC-WIM supplies a Fill Mode in which it may control a filling

operation, using the hardware inputs (section E.2) and hardware

outputs (section E.3). The character of the filling operation is

determined by parameters (section E.4) set via the Settings utility

(section 3.3). The filling results are shown on the LED display (section

E.5). The Fill Mode supports also commands (section E.6) sent through

the communication line (USB, RS232 or RS485). These commands

may draw the filling results as well as send operational instructions,

such as start a filling operation. Both the display and the

communication line may indicate an error code (section E.7).

During the filling cycles the board learns the system in order to improve

the results of the following cycles by compensating system’s

unavoidable inaccuracy . The first cycle is split into two parts (start-

stop-start-stop) enabling the board to learn the system, thus apply

already the above compensation, trying to achieve a correct result even

in the first cycle.

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E.2 Hardware Inputs

Input #1

OFF =

Input #2

ON = Turn

output #1 on

Input #3

ON = Turn

output #2 on

Input #4

N/A

Manual

ON =

When

in error

status:

Terminate

an Error

Status

ON =

Emergency

Stop

When

not

ON = Start

ON = Auto

in error

status

and

Long ON =

Special

Mode (*)

not

during

filling:

* The Special Mode

In this mode:

* ‘SP’ flashes on the left side of the LED display.

* The three setpoints are shown, in turn, on the LED display.

In this state (while input #3 is still on) you have two options:

1. Switch the setpoint

Turn input #3 off.

The setpoint currently shown on the LED display becomes effective.

The LED display will show ‘SUCCESS’ and then the board will return to

regular auto-mode. You will be able to see the effective setpoint on the LED

display (prefixed by ‘SP’). If the ‘get results immediately’ option is selected,

the board reports to the PC: ‘Setpoint selected as…’.

2. Switch to general (non-fill) mode

Turn input #2 on for ~2 seconds.

The LED display will show ‘Gen.ModE’ and then the board will switch to the

general mode.

Note: When the board switches to the general mode, make sure to turn input

#3 off, otherwise the manual zero operation will take place – refer to section

H.1 / Manual Zero / Hardware input.

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E.3 Hardware Outputs

Output #1

Output #2

Option #1

Output #3

Output #4

Filling

Complete

(Only with board

firmware 1.11 or

higher.)

Fast Valve

Slow Valve

Error

Option #2

Fast Valve = Output #1 + Output #2

Slow Valve = Output #2 only

(About Options #1 and Option #2 refer to ‘Fast Speed Config’

in section E.4.3)

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E.4 Filling Parameters

Notes

1. There is a set of three setpoints. Once they are specified (using the Settings

utility), the user may switch to another setpoint without needing a PC. This gives

more flexibility when several setpoints are needed. For details about the switching

procedure refer to section E.2.

2. These setpoints are absolutely different from the four general setpoints (section

3.3.1.3). The general setpoints are inactive in the Fill mode.

Filling By

Weight

Means that Setpoint is defined in weighing units.

Time

Means that Setpoint is defined in time units.

E.4.1 Filling By = Weight

E.4.1.1 Filling by Weight Parameters

Setpoint #x

The required total filling weight when the user selects

setpoint #x (x = 1, 2 or 3).

Slow Amount

The required slow filling weight, in % of the current Setpoint

(a tip shows the value of Slow Amount in weight units).

Specify ‘0’ when only one speed is required.

Filling Timeout

Time limitation for the filling process (in ms).

Note: The ‘Filling Timeout’ parameter is common for all the three

setpoints. Therefore, specify a ‘Filling Timeout’ value large enough

to cover all the setpoints used.

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Auto Correction &

Averaging x last fillings

When ‘Auto Correction’ is checked, the board tries to correct the

filling amount, based on the results of the last x fillings.

E.4.1.2 Auto Tare

Activate

• When not checked, the Setpoint defines the requested final

gross weight.

That is, if the setpoint is 100 kg and the starting gross weight

is 90 kg, the filling amount will be 10 kg.

The next two parameters (Hi/Lo Limits) are irrelevant.

• When checked, the Setpoint defines the requested filling

amount.

That is, if the setpoint is 100 kg, the filling amount will also

be 100 kg, regardless of the starting gross weight.

However, the filling operation will take place only if the

starting gross weight, as found in accordance with the

Stabilization Criterion (section E.4.1.4), is within the range

defined by the following two parameters (Hi/Lo Limits).

Otherwise, the filling operation will be rejected and an error

will be reported.

Hi Limit

When ‘Auto Tare’ is activated, specifies the high allowed tare limit.

Lo Limit

When ‘Auto Tare’ is activated, specifies the low allowed tare limit.

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E.4.1.3 Valid Results Limits

The resulting filling weight should normally be inside a user

pre-defined ‘valid range’. In case the weight exceeds that range,

an error situation will occur. Specify ‘Valid Limits (±)’= 0 if you don’t

need this check.

Start from filling # …

Specifies the first filling to be checked, letting you disregard some

filling until the board learns the system thus gives good results. For

example, if 7 is specified, then no error situation will occur upon the first

6 fillings, whatever the results will be.

Valid Limits (±) … %

Specifies the acceptable deviation for a valid result, as a percent of the

current setpoint (a tip shows the value of that acceptable deviation in

weight units).

For example, if the current setpoint = 100 kg and ‘Valid Limits (±)’ =

1%, then the result will be considered as ‘valid’ when it is in the range

[99,101] kg. Otherwise, error #101 or #102 will occur. Specify ‘Valid

Limits (±)’= 0 if you don’t need the ‘Valid Results Limits’ check.

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E.4.1.4 Stabilization Criterion (Tare & Stop)

At the beginning and at the end of a filling cycle the board waits for the

scale to stabilize in order to read its weight. Hence, some stability criterion

is required. The board requires that all readings within ‘Delta Time’ will be

inside a range whose width is ‘Delta Weight’, both at the beginning (Tare)

and at the end (Stop) of the filling cycle. The waiting for that stabilization

is limited by ‘Timeout’, causing an error situation in case of failure.

Delta Weight

See the description above.

Delta Time

See the description above.

Stabilization Timeout

See the description above.

Impacts

The system copes with impacts and automatically resumes the filling in

case the current weight – after stabilization – is less than the current

setpoint.

E.4.1.5 Lazy Filling

Activate

When checked, the board will identify too slow filling, thus reporting an

error earlier than the ‘Timeout’ check would do.

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E.4.2 Filling By = Time

E.4.2.1 Filling by Time Parameters

Setpoint #x

The required total filling time when the user selects

setpoint #x (x = 1, 2 or 3).

Slow Amount

The required slow filling time, in % of the current Setpoint

(a tip shows the value of Slow Amount in ms).

Specify ‘0’ when only one speed is required.

E.4.2.2 Stabilization Criterion (Stop)

At the end of a filling cycle the board waits for the scale to stabilize

before proceeding to the next cycle. The size of this waiting delay is

specified by the ‘‘Delta Time’’ parameter.

Delta Time

See the description above.

E.4.3 Fast Speed Config

Option1

Fast Speed = Output #1

Slow Speed = Output #2

Option2

Fast Speed = Output #1 + Output #2

Slow Speed = Output #2

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E.4.4 The Filling Configurations Library

There is a ‘Filling Configurations Library’ in which you may save sets of

filling configuration parameters. This is useful in case you have more

than one type of filling, letting you switch easily and reliably from one

configuration to another.

(Note: This library has nothing to do with the calibration library

mentioned in section 3.2.2.)

Refer to the ‘Library’ box.

Save

If you like your configuration to be saved in the library, specify a Library

Name and check the option box. (It is recommended to specify a

meaningful Library Name so that later you’ll recognize the various files

you created in the library.) Your filling configuration will be saved in the

library only upon clicking the ‘Save to Board’ button. In case a library

file having the name you specified already exists, you’ll have to select

either to overwrite it, or to use another name.

Recall or Delete a File in the Library

Click the Select button in order to select a file to be recalled or deleted.

You may watch the various files and their contents. In order to delete a

file, click the Delete button. The procedure to recall a file has two or

three steps:

1. Click the Confirm button. This will insert file’s parameters to the

'Filling Definition' box.

2. Optionally, you may modify some of the parameters, thus using the

library file as a draft to make your changes easier. In case you want the

new values to be saved in a file (either the original one or another), make

sure to check the option in the ‘Library’ box.

3. Click the ‘Save to Board’ button.

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E.5 LED Display Notations

In Fill-mode, the LED display shows the current sub-mode:

m Fill

AutoFill

Manual Fill-mode (input #1 is off)

Auto Fill-mode (input #1 is on)

Likewise, the value shown on the LED display is prefixed by one or two

letters:

Current weight

Weight during a filling cycle

Actual weight (the resulting final filling weight)

SP SetPoint

The scale of the displayed weight

The displayed weight is sometimes gross and sometimes net:

* During a Filling Cycle, and the user selected Auto Tare:

The displayed weight is net.

* In all other cases (that is, not during a Filling Cycle, or even

during a Filling Cycle but the user did NOT select Auto Tare):

The displayed weight is gross.

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E.6 Commands

Enter & Exit Fill Mode

Enter Fill Mode (from General Mode)

Exit Fill Mode (to General Mode) (small ‘x’)

Inside the Fill Mode

Start filling (‘g’ stands for ‘go’) (like input #2 does).

Terminate an error status (like input #3 does).

Emergency stop (like input #4 does).

Get filling(s) report

Response Example:

# 1 A= 40.99 Tr= 6.65 Cv= 0.00 Ft= 7527 ms St= 2554 ms Cc= 0

Legend: Filling #1, Actual (=final) weight=40.99,

Tare=6.65, Correction Value=0.00,

Fast time=7527 ms, Slow time=2554 ms,

Completion Code=0 (0 is normal, otherwise it’s an error code).

Notes:

1. The actual (final) weight (40.99 in the example) is:

* net weight if Auto Tare is selected

* gross weight if Auto Tare is not selected.

2. The reports are accumulated in a FIFO whose size is 30

fillings. That is, only up to last 30 reports are available.

Note: The FIFO size (30) is subject to change in the various

versions.

3. Please refer also to section 3.3.2.1.4.

Get fillings summary:

Number of normal fillings.

Number of each error type cases for each error type

that occurred at least once.

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Get current status (small ‘s’)

Response Example:

Current_Status: W= 17.14 Tr= 6.65 Cv= 0.00 M=F A=I S= 0

Legend: Current (gross) weight=17.14, Last Tare=6.65,

Next Correction Value=0.00, Mode=Fill mode,

Activity=Idle (or: Tare, Fast, Slow)

System staus=0 (0 is normal, otherwise it’s an error code).

Get parameters list (small ‘p’).

Turn off the “Get results immediately” feature.

Turn on the “Get results immediately” feature.

Get current mode (upper case V).

Board’s response: ‘Fill-mode’.

Note: This command is useful in order to find out board’s

mode. In the general mode the response to the ‘V’ command

is ‘LCIC-WIM/V#.##’ (refer to section 4.1/i), as opposed to

the ‘Fill-mode’ response in the fill mode.

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E.7 Error Codes

101 Actual Filling Weight < Low Limit of 'Valid Result Limits'.

102 Actual Filling Weight > High Limit of 'Valid Result Limits'.

103 SetPoint < Low Limit of 'Valid Result Limits'.

104 SetPoint > High Limit of 'Valid Result Limits'.

105 High Tare Limit < Low Tare Limit

106 Actual Tare < Low Tare Limit

107 Actual Tare > High Tare Limit

108 Valid High Limit < Valid Low Limit

109 Lazy Filling

111 Filling Timeout

112 Low Tare Limit > High Tare Limit

113 SetPoint < Stabilization Delta Weight

115 Tare Stabilization Timeout

116 Initial weight is too large

117 Slow amount is too large

118 End Stabilization Timeout

119 Stabilization Delta Weight < Resolution

120 Memory Failure

121 User Emergency Stop

122 Stabilization Delta Time > Stabilization Timeout

123 Filling Timeout > Stabilization Timeout

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Appendix F: Specifications

F.1 Load Cell Input

• 5 Volt excitation for upto 10 load cells (350 Ohm)

• Compatible with 1, 2 & 3 mV/V load cells

• Low noise wide bandwidth amplifier & 24 bit ADC

F.2 A/D

• Very high speed A/D: upto 52,000 samples per second

• 24 Bit A/D with ± 8 million counts for tension and compression applications

F.3 Digital Inputs

• 4 opto-isolated inputs with 10-30 VDC range, each with status LED

• Input #2 configurable as high speed counter

F.4 Digital & Analog Outputs

• 4 opto-isolated solid state relays rated at 50V, 300mA, each with status LED.

Configurable as setpoints or manual outputs.

• Analog output of 0 to 2.5V with 16 bit resolution.

F.5 Standard Interfaces

• USB 2.0 Full Speed compatible

• Combined RS232/RS485

• Multiple boards may be connected via USB or RS232/RS485

• Ideal for PLC based applications

F.6 Software

• LCIC-WIM Calibration Wizard software is included.

• Included is the LCIC-WIM Monitor utility which is a vital tool for analyzing

dynamic load/force systems. It takes full advantage of the board’s speed.

• Also included the LCIC-WIM-SETTINGS utility which gives control to card’s

filters, analog output, filling parameters and other settings.

• An ActiveX interface is supplied for easier programming of user’s application;

however, direct conversation with the board is available either.

F.7 Dimensions (mm)

• Standard OEM model 160 x 100pcb (Eurocard(

• ABS cased option

F.8 Misc.

• Powerful 32 bit / 135 MIPS DSP for high speed onboard processing.

• 8 digit LED display

• On board temperature sensor

• Card includes an integral Fill Mode supplying an independent filling control.

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Appendix G: Trouble-shooting

G.1 Card does not respond after PC power-on

Q. Everything was OK, but after PC restart the card suddenly stopped

responding.

A. As specified in section D.4, after PC power on or off the serial

communication (RS232/RS485) is likely to drop. A card reset is needed

in this case.

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Appendix H: Zero & Tare

There are two functions which are similar, yet actually different: Zero &

Tare:

• The Zero function supplies both manual and automatic ways to clear

the gross weight.

• The Auto-Tare function supplies a way to define the meaning of the

setpoint parameter.

H.1 The Zero function

This function supplies both manual and automatic ways to clear the gross

weight:

Manual Zero

The manual zero is available only in the general mode, not in the

fill-mode. Its effect is temporary – it expires upon card reset.

The manual zero is accessible via two ways:

* Hardware input: Turn on digital input #3 for two seconds.

* Communication:

* When accessing the communication directly:

Send the ‘z’ command (section 4.1/i).

* When using the LCIC-WIM ActiveX:

Call the Apply_Temporary_Zero function (section 4.3.5).

Auto Zero

The auto zero is available only in the fill-mode, not in the

general mode. Its effect is temporary – it expires upon card reset

or upon exiting the fill-mode.

The auto zero operation occurs when some user’s pre-defined condition is

satisfied. For more details refer to section 3.3.2.2.

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H.2 The Auto-Tare function

This function supplies a way to define the meaning of the setpoint

parameter:

* When the ‘AutoTare’ option is not activated, the setpoint

defines the requested final gross weight.

That is, if the setpoint is 100 kg and the starting gross weight

is 90 kg, the filling amount will be 10 kg.

* When the ‘AutoTare’ option is activated, the setpoint

defines the requested filling amount.

That is, if the setpoint is 100 kg, the filling amount will also

be 100 kg, regardless of the starting gross weight.

However, the filling operation will take place only if the starting

gross weight is within a user pre-defined range; otherwise, the

filling operation will be rejected and an error will be indicated.

The activation of the ‘Auto-Tare’ option as well as its parameters are

described in section E.4.1.2.

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WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a

period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1) month

grace period to the normal one (1) year product warranty to cover handling and shipping time. This

ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service

Department will issue an Authorized Return (AR) number immediately upon phone or written request.

Upon examination by OMEGA, if the unit is found to be defective, it will be repaired or replaced at no

charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser,

including but not limited to mishandling, improper interfacing, operation outside of design limits,

improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of

having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;

or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating

conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not

limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,

OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any

damages that result from the use of its products in accordance with information provided by

OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be

as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR

REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE,

AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND

FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF

LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of

OMEGA with respect to this order, whether based on contract, warranty, negligence,

indemnification, strict liability or otherwise, shall not exceed the purchase price of the

component upon which liability is based. In no event shall OMEGA be liable for

consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic

Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical

applications or used on humans. Should any Product(s) be used in or with any nuclear installation or

activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility

as set forth in our basic WARRANTY/DISCLAIMER language, and, additionally, purchaser will indemnify

OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the

Product(s) in such a manner.

RETURN REQUESTS/INQUIRIES

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE

RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN

(AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID

PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return

package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent

breakage in transit.

FOR WARRANTY RETURNS, please have the

following information available BEFORE

contacting OMEGA:

FOR NON-WARRANTY REPAIRS, consult OMEGA

for current repair charges. Have the following

information available BEFORE contacting OMEGA:

1. Purchase Order number under which the product

was PURCHASED,

1. Purchase Order number to cover the COST

of the repair,

2. Model and serial number of the product under

warranty, and

3. Repair instructions and/or specific problems

relative to the product.

2. Model and serial number of the product, and

3. Repair instructions and/or specific problems

relative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords

our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.

reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the

prior written consent of OMEGA ENGINEERING, INC.

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Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com^sm

TEMPERATURE

Ⅺ

Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies

Wire: Thermocouple, RTD & Thermistor

Calibrators & Ice Point References

Recorders, Controllers & Process Monitors

Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

Ⅺ

Transducers & Strain Gages

Load Cells & Pressure Gages

Displacement Transducers

Instrumentation & Accessories

FLOW/LEVEL

Ⅺ

Rotameters, Gas Mass Flowmeters & Flow Computers

Air Velocity Indicators

Turbine/Paddlewheel Systems

Totalizers & Batch Controllers

pH/CONDUCTIVITY

Ⅺ

pH Electrodes, Testers & Accessories

Benchtop/Laboratory Meters

Controllers, Calibrators, Simulators & Pumps

Industrial pH & Conductivity Equipment

DATA ACQUISITION

Ⅺ

Data Acquisition & Engineering Software

Communications-Based Acquisition Systems

Plug-in Cards for Apple, IBM & Compatibles

Datalogging Systems

Recorders, Printers & Plotters

HEATERS

Ⅺ

Heating Cable

Cartridge & Strip Heaters

Immersion & Band Heaters

Flexible Heaters

Laboratory Heaters

ENVIRONMENTAL

MONITORING AND CONTROL

Ⅺ

Metering & Control Instrumentation

Refractometers

Pumps & Tubing

Air, Soil & Water Monitors

Industrial Water & Wastewater Treatment

pH, Conductivity & Dissolved Oxygen Instruments

M4693/0908

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