National Instruments Music Mixer cFP Al 110 User Manual

FieldPointOperating Instructions  
FP-AI-110 and cFP-AI-110  
Eight-Channel, 16-Bit Analog Input Modules  
These operating instructions describe how to install and use the  
FP-AI-110 and cFP-AI-110 analog input modules (referred to  
inclusively as the [c]FP-AI-110). For information about  
configuring and accessing the [c]FP-AI-110 over a network, refer  
to the user manual for the FieldPoint network module you are  
using.  
Features  
The [c]FP-AI-110 is a FieldPoint analog input module with the  
following features:  
Eight analog voltage or current input channels  
Eight voltage input ranges: 0–1 V, 0–5 V, 0–10 V, 60 mV,  
300 mV, 1 V, 5 V, and 10 V  
Three current input ranges: 0–20, 4–20, and 20 mA  
16-bit resolution  
Three filter settings: 50, 60, and 500 Hz  
250 Vrms CAT II continuous channel-to-ground isolation,  
verified by 2,300 Vrms dielectric withstand test  
–40 to 70 °C operation  
Hot swappable  
Installing the FP-AI-110  
The FP-AI-110 mounts on a FieldPoint terminal base (FP-TB-x),  
which provides operating power to the module. Installing the  
FP-AI-110 onto a powered terminal base does not disrupt the  
operation of the FieldPoint bank.  
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(10 lb in.) of torque. The nylon coating on the screws prevents  
them from loosening.  
4
3
5
2
4
2
1
1
2
3
cFP-DI-300  
Captive Screws  
cFP Controller Module  
4
5
Screw Holes  
cFP Backplane  
Figure 2. Installing the cFP-AI-110  
Wiring the [c]FP-AI-110  
The FP-TB-x terminal base has connections for each of the eight  
input channels and for an external power supply to power field  
devices. The cFP-CB-x connector block provides the same  
connections. Each channel has separate input terminals for voltage  
(VIN) and current (IIN) input. Voltage and current inputs are  
referenced to the COM terminals, which are internally connected  
to each other and to the C terminals. All eight VSUP terminals are  
internally connected to each other and to the V terminals.  
You can use a 10–30 VDC external supply to power field devices.  
Connect the external power supply to multiple V and VSUP  
terminals so that the maximum current through any V terminal  
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is 2 A or less and the maximum current through any VSUP terminal  
is 1 A or less.  
Install a 2 A maximum, fast-acting fuse between the external  
power supply and the V terminal on each channel. The wiring  
diagrams in this document show fuses where appropriate.  
Table 1 lists the terminal assignments for the signals associated  
with each channel. The terminal assignments are the same for the  
FP-TB-x terminal bases and the cFP-CB-x connector blocks.  
Table 1. Terminal Assignments  
Terminal Numbers  
1
2
3
VIN  
1
IIN  
2
VSUP  
17  
Channel  
COM  
18  
0
1
2
3
4
5
6
7
3
4
19  
20  
5
6
21  
22  
7
8
23  
24  
9
10  
12  
14  
16  
25  
26  
11  
13  
15  
27  
28  
29  
30  
31  
32  
1 Install a 2 A, fast-acting fuse on each VIN terminal.  
2 Install a 2 A, fast-acting fuse on each IIN terminal.  
3 Install a 2 A maximum, fast-acting fuse on each VSUP terminal.  
Caution Do not connect both current and voltage inputs  
to the same channel.  
Caution Cascading power between two modules defeats  
isolation between those modules. Cascading power from  
the network module defeats all isolation between  
modules in the FieldPoint bank.  
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Taking Measurements  
with the [c]FP-AI-110  
The [c]FP-AI-110 has eight single-ended input channels. All eight  
channels share a common ground reference that is isolated from  
other modules in the FieldPoint system. Figure 3 shows the analog  
input circuitry on one channel.  
V
VSUP  
VIN  
Filter  
16-Bit  
Isolated ADC  
IIN  
Filter  
COM  
C
Figure 3. FP-AI-110 Analog Input Circuit  
Measuring Voltage with the [c]FP-AI-110  
The input ranges for voltage signals are 0–1 V, 0–5 V, 0–10 V,  
60 mV, 300 mV, 1 V, 5 V, and 10 V.  
Figure 4 shows how to connect a voltage source without an  
external power supply to one channel of the [c]FP-AI-110.  
C
V
V
SUP  
To Analog  
Input Circuitry  
V
IN  
>100 MΩ  
Input  
Impedance  
I
IN  
+
Voltage  
Source  
COM  
To Next Channel  
[c]FP-AI-110  
Figure 4. Voltage Source without External Power Supply  
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Figure 5 shows how to connect a voltage source with an external  
power supply to one channel of the [c]FP-AI-110.  
10–30 VDC  
External  
Power Supply  
(Optional)  
+
2 A  
Max  
1 A  
C
V
Max  
V
SUP  
To Analog  
Input Circuitry  
Powered  
Voltage  
V
+
OUT  
IN  
Transducer  
I
IN  
COM  
To Next Channel  
[c]FP-AI-110  
Figure 5. Voltage Source with External Power Supply  
Measuring Current with the [c]FP-AI-110  
The input ranges for current sources are 0–20, 4–20, and 20 mA.  
The module reads current flowing into the IIN terminal as positive  
and current flowing out of the terminal as negative. Current flows  
into the IIN terminal, goes through a 100 resistor, and flows out  
from the COM or C terminal.  
Figure 6 shows how to connect a current source without an external  
power supply to one channel of the [c]FP-AI-110.  
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V
V
SUP  
V
IN  
1 A  
Max  
To Analog  
Input Circuitry  
I
IN  
Current  
Source  
COM  
To Next Channel  
[c]FP-AI-110  
Figure 6. Current Source without External Power Supply  
Figure 7 shows how to connect a current source with an external  
power supply to one channel of the [c]FP-AI-110.  
+
10–30 VDC  
External  
Power Supply  
(Optional)  
2 A  
Max  
1 A  
C
V
Max  
V
SUP  
Loop-Powered  
Current  
V
IN  
To Analog  
Input Circuitry  
Transducer  
I
IN  
COM  
To Next Channel  
[c]FP-AI-110  
Figure 7. Current Source with External Power Supply  
Input Ranges  
To prevent inaccurate readings, choose an input range such that the  
signal you are measuring does not exceed either end of the range.  
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Overranging  
The [c]FP-AI-110 has an overranging feature that measures a little  
beyond the nominal values of each range. For example, the actual  
measurement limit of the 10 V range is 10.4 V. The overranging  
feature enables the [c]FP-AI-110 to compensate for field devices  
with span errors of up to +4% of full scale. Also, with the  
overranging feature, a noisy signal near full scale does not create  
rectification errors.  
Filter Settings  
Three filter settings are available for each channel. The filters on  
the [c]FP-AI-110 input channels are comb filters that provide  
notches of rejection at multiples, or harmonics, of a fundamental  
frequency. You can select a fundamental frequency of 50, 60, or  
500 Hz. The [c]FP-AI-110 applies 95 dB of rejection at the  
fundamental frequency and at least 60 dB of rejection at each of  
the harmonics. In many cases, most of the noise components of  
input signals are related to the local AC power line frequency, so  
a filter setting of either 50 or 60 Hz is best.  
The filter setting determines the rate at which the [c]FP-AI-110  
samples the inputs. The [c]FP-AI-110 resamples all of the channels  
at the same rate. If you set all of the channels to the 50 or 60 Hz  
filter, the [c]FP-AI-110 samples each channel every 1.470 s or  
every 1.230 s, respectively. If you set all of the channels to 500 Hz  
filters, the module samples each channel every 0.173 s. When you  
select different filter settings for different channels, use the  
following formula to determine the sampling rate.  
(number of channels with 50 Hz filter) ×184 ms +  
(number of channels with 60 Hz filter) ×154 ms +  
(number of channels with 500 Hz filter) × 21.6 ms =  
Update Rate  
If you are not using some of the [c]FP-AI-110 channels, set them  
to the 500 Hz filter setting to improve the response time of the  
module. For example, if one channel is set for a 60 Hz filter, and  
the other seven channels are set to 500 Hz, the module samples  
each channel every 0.3 s (four times faster than the case in which  
all eight channels are set to the 60 Hz setting).  
The sampling rate does not affect the rate at which the network  
module reads the data. The [c]FP-AI-110 always has data available  
for the network module to read; the sampling rate is the rate at  
which this data is updated. Set up your application so that the  
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sampling rate is faster than the rate at which the network module  
polls the [c]FP-AI-110 for data.  
Status Indicators  
The [c]FP-AI-110 has two green status LEDs, POWER and  
READY. After you insert the [c]FP-AI-110 into a terminal base or  
backplane and apply power to the connected network module, the  
green POWER LED lights and the [c]FP-AI-110 informs the  
network module of its presence. When the network module  
recognizes the [c]FP-AI-110, it sends initial configuration  
information to the [c]FP-AI-110. After the [c]FP-AI-110 receives  
this initial information, the green READY LED lights and the  
module is in normal operating mode. A blinking or unlit READY  
LED indicates an error condition.  
Upgrading the FieldPoint Firmware  
You may need to upgrade the FieldPoint firmware when you add  
new I/O modules to the FieldPoint system. For information on  
determining which firmware you need and how to upgrade your  
firmware, go to ni.com/info and enter fpmatrix.  
Isolation and Safety Guidelines  
Caution Read the following information before  
attempting to connect the [c]FP-AI-110 to any circuits  
that may contain hazardous voltages.1  
This section describes the isolation of the [c]FP-AI-110 and  
its compliance with international safety standards. The field  
wiring connections are isolated from the backplane and the  
inter-module communication bus. The isolation barriers in the  
module provide 250 Vrms Measurement Category II continuous  
channel-to-backplane and channel-to-ground isolation, verified by  
2,300 Vrms, 5 s dielectric withstand test.2 The [c]FP-AI-110  
provides double insulation (compliant with IEC 61010-1) for  
1
A hazardous voltage is a voltage greater than 42.4 Vpeak or 60 VDC. When a  
hazardous voltage is present on any channel, all of the channels must be considered  
to be carrying hazardous voltages. Ensure that all circuits connected to the module  
are inaccessible to human touch.  
2 Refer to the Safety Isolation Voltage section for more information about isolation on  
the [c]FP-AI-110.  
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working voltages of 250 Vrms1. Safety standards (such as those  
published by UL and IEC) require the use of double insulation  
between hazardous voltages and any human-accessible parts or  
circuits.  
Never try to use any isolation product between human-accessible  
parts (such as DIN rails or monitoring stations) and circuits that  
can be at hazardous potentials under normal conditions, unless the  
product is specifically designed for such an application, as is the  
[c]FP-AI-110.  
Even though the [c]FP-AI-110 is designed to handle applications  
with hazardous potentials, follow these guidelines to ensure a safe  
total system:  
There is no isolation between channels on the [c]FP-AI-110. If  
a hazardous voltage is present on any channel, all channels are  
considered hazardous. Make sure that all other devices and  
circuits connected to the module are properly insulated from  
human contact.  
Do not share the external supply voltages (the V and C  
terminals) with other devices (including other FieldPoint  
devices), unless those devices are isolated from human contact.  
For Compact FieldPoint, you must connect the protective earth  
(PE) ground terminal on the cFP-BP-x backplane to the system  
safety ground. The backplane PE ground terminal has the  
following symbol stamped beside it: . Connect the  
backplane PE ground terminal to the system safety ground  
using 14 AWG (1.6 mm) wire with a ring lug. Use the 5/16 in.  
panhead screw shipped with the backplane to secure the ring  
lug to the backplane PE ground terminal.  
As with any hazardous voltage wiring, make sure that all  
wiring and connections meet applicable electrical codes and  
commonsense practices. Mount terminal bases and backplanes  
in an area, position, or cabinet that prevents accidental or  
unauthorized access to wiring that carries hazardous voltages.  
Do not use the [c]FP-AI-110 as the only isolating barrier  
between human contact and working voltages higher than  
250 Vrms  
.
1
Working voltage is defined as the signal voltage plus the common-mode voltage.  
Common-mode voltage is the voltage of the module with respect to ground.  
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Operate the [c]FP-AI-110 only at or below Pollution Degree 2.  
Pollution Degree 2 means that only nonconductive pollution  
occurs in most cases. Occasionally, however, a temporary  
conductivity caused by condensation must be expected.  
Operate the [c]FP-AI-110 at or below Measurement  
Category II. Measurement Category II is for measurements  
performed on circuits directly connected to the low-voltage  
installation. This category refers to local-level distribution,  
such as that provided by a standard wall outlet.  
Safety Guidelines for Hazardous Locations  
The [c]FP-AI-110 is suitable for use in Class I, Division 2, Groups  
A, B, C, and D hazardous locations; Class 1, Zone 2, AEx nC IIC  
T4 and Ex nC IIC T4 hazardous locations; and nonhazardous  
locations only. Follow these guidelines if you are installing the  
[c]FP-AI-110 in a potentially explosive environment. Failing to  
follow these guidelines may result in serious injury or death.  
Caution Do not disconnect I/O-side wires or connectors  
unless power has been switched off or the area is known  
to be nonhazardous.  
Caution Do not remove modules unless power has been  
switched off or the area is known to be nonhazardous.  
Caution Substitution of components may impair  
suitability for Class I, Division 2.  
Caution For Zone 2 applications, install the Compact  
FieldPoint system in an enclosure rated to at least IP 54  
as defined by IEC 60529 and EN 60529.  
Special Conditions for Safe Use in Europe  
This equipment has been evaluated as EEx nC IIC T4 equipment  
under DEMKO Certificate No. 03 ATEX 0251502X. Each module  
is marked  
II 3G and is suitable for use in Zone 2 hazardous  
locations.  
Caution For Zone 2 applications, connected signals must  
be within the following limits:  
Capacitance..........................20 µF max  
Inductance............................0.2 H max  
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Safety Guidelines for Hazardous Voltages  
If hazardous voltages are connected to the module, take the  
following precautions. A hazardous voltage is a voltage greater  
than 42.4 Vpeak or 60 VDC to earth ground.  
Caution Ensure that hazardous voltage wiring is  
performed only by qualified personnel adhering to local  
electrical standards.  
Caution Do not mix hazardous voltage circuits and  
human-accessible circuits on the same module.  
Caution Make sure that devices and circuits connected to  
the module are properly insulated from human contact.  
Caution When terminals on the connector block are live  
with hazardous voltages, make sure that the terminals are  
not accessible.  
Specifications  
The following specifications are typical for the range –40 to 70 °C  
unless otherwise noted. Gain errors are given as a percentage of  
input signal value. Specifications are subject to change without  
notice.  
Input Characteristics  
Number of channels..........................8  
ADC resolution.................................16 bits at 50 or 60 Hz;  
10 bits at 500 Hz  
Type of ADC.....................................Delta-sigma  
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Effective resolution by input signal range and filter setting  
Effective  
Resolution  
with 50 or  
60 Hz Filter  
Enabled*  
Effective  
Resolution  
with 500 Hz  
or No Filter  
Enabled*  
Nominal  
Input Range  
With  
Overranging  
Voltage  
60 mV  
300 mV  
1 V  
5 V  
10 V  
0–1 V  
0–5 V  
0–10 V  
65 mV  
325 mV  
1.04 V  
5.2 V  
10.4 V  
0–1.04 V  
0–5.2 V  
0–10.4 V  
3 µV  
16 µV  
40 µV  
190 µV  
380 µV  
20 µV  
95 µV  
190 µV  
25 µV  
100 µV  
300 µV  
1,500 µV  
3,000 µV  
300 µV  
1,500 µV  
3,000 µV  
Current 0–20 mA  
4–20 mA  
0–21 mA  
3.5–21 mA  
21 mA  
0.5 µA  
0.5 µA  
0.7 µA  
15 µA  
15 µA  
16 µA  
20 mA  
*Includes quantization errors and rms noise.  
Input characteristics by filter setting  
Filter Settings  
Characteristic  
Update rate*  
50 Hz  
1.470 s  
16 bits  
13 Hz  
60 Hz  
1.230 s  
16 bits  
16 Hz  
500 Hz  
0.173 s  
10 bits  
130 Hz  
Effective resolution  
Input bandwidth (–3 dB)  
* Applies when all eight channels are set to the same filter setting.  
Normal-mode rejection.....................95 dB (with 50/60 Hz filter)  
Nonlinearity......................................0.0015% (monotonicity1  
guaranteed over the  
operating temperature range)  
Voltage Inputs  
Input impedance................................>100 MΩ  
Overvoltage protection ..................... 40 V  
1
A characteristic of an ADC in which the digital code output always increases as the  
value of the analog input to it increases.  
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Input current  
25 °C...........................................400 pA typ, 1 nA max  
70 °C...........................................3 nA typ, 15 nA max  
Input noise (with 50 or 60 Hz filter enabled)  
60 mV range............................. 3 LSB1 peak-to-peak  
300 mV range........................... 2 LSB peak-to-peak  
Other ranges ............................... 1 LSB peak-to-peak  
Typical and warranted accuracy by input range and temperature  
range  
Typical Accuracy  
at 15 to 35 °C  
(% of Reading;  
% of Full Scale)  
Warranted Accuracy  
at 15 to 35 °C  
(% of Reading;  
% of Full Scale)  
Nominal  
Input Range  
60 mV  
300 mV  
1 V  
0.04%; 0.05%  
0.04%; 0.015%  
0.04%; 0.008%  
0.04%; 0.005%  
0.04%; 0.005%  
0.04%; 0.005%  
0.04%; 0.003%  
0.04%; 0.003%  
0.05%; 0.3%  
0.06%; 0.1%  
0.05%; 0.04%  
0.06%; 0.02%  
0.06%; 0.02%  
0.05%; 0.03%  
0.06%; 0.01%  
0.06%; 0.01%  
5 V  
10 V  
0–1 V  
0–5 V  
0–10 V  
Typical Accuracy  
at –40 to 70 °C  
(% of Reading;  
% of Full Scale)  
Warranted Accuracy  
at –40 to 70 °C  
(% of Reading;  
% of Full Scale)  
Nominal  
Input Range  
60 mV  
300 mV  
1 V  
0.06%; 0.35%  
0.07%; 0.08%  
0.06%; 0.03%  
0.07%; 0.01%  
0.07%; 0.01%  
0.10%; 1.5%  
0.11%; 0.40%  
0.10%; 0.13%  
0.11%; 0.04%  
0.11%; 0.03%  
5 V  
10 V  
1
Least significant bit: the smallest voltage change detectable by the ADC.  
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Typical Accuracy  
at –40 to 70 °C  
(% of Reading;  
% of Full Scale)  
Warranted Accuracy  
at –40 to 70 °C  
(% of Reading;  
% of Full Scale)  
Nominal  
Input Range  
0–1 V  
0–5 V  
0–10 V  
0.06%; 0.025%  
0.07%; 0.007%  
0.07%; 0.005%  
0.10%; 0.12%  
0.11%; 0.03%  
0.11%; 0.02%  
Note Full scale is the maximum value of the nominal  
input range. For example, for the 10 V input range,  
full scale is 10 V and 0.01% of full scale is 1 mV.  
Gain error drift.................................. 20 ppm/°C  
Offset error drift  
With 50 or 60 Hz  
filter enabled............................... 6 µV/°C  
With 500 Hz filter enabled ......... 15 µV/°C  
Current Inputs  
Input impedance................................60–150 Ω  
Overvoltage protection ..................... 25 V  
Input noise (50 or 60 Hz filter).........0.3 µA rms  
Typical and warranted accuracy by temperature range  
Typical Accuracy  
Warranted Accuracy  
at 15 to 35 °C  
at 15 to 35 °C  
(% of Reading; % of Full Scale) (% of Reading; % of Full Scale)  
0.08%; 0.010%  
0.11%; 0.012%  
Typical Accuracy  
Warranted Accuracy  
at –40 to 70 °C  
at –40 to 70 °C  
(% of Reading; % of Full Scale) (% of Reading; % of Full Scale)  
0.16%; 0.016%  
0.3%; 0.048%  
Offset error drift................................ 100 nA/°C  
Gain error drift.................................. 40 ppm/°C  
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Physical Characteristics  
Indicators ..........................................Green POWER and  
READY indicators  
Weight  
FP-AI-110...................................140 g (4.8 oz)  
cFP-AI-110.................................110 g (3.7 oz)  
Power Requirements  
Power from network module ............350 mW  
Safety Isolation Voltage  
Channel-to-ground isolation  
Continuous .................................250 Vrms, Measurement  
Category II  
Dielectric withstand....................2,300 Vrms (test duration  
is 5 s)  
Channel-to-channel isolation............No isolation between  
channels  
Environmental  
FieldPoint modules are intended for indoor use only. For outdoor  
use, they must be mounted inside a sealed enclosure.  
Operating temperature ......................40 to 70 °C  
Storage temperature..........................55 to 85 °C  
Humidity...........................................10 to 90% RH,  
noncondensing  
Maximum altitude.............................2,000 m; at higher altitudes  
the isolation voltage ratings  
must be lowered.  
Pollution Degree ...............................2  
Shock and Vibration  
These specifications apply only to the cFP-AI-110.  
NI recommends Compact FieldPoint if your application  
is subject to shock and vibration.  
Operating vibration, random  
(IEC 60068-2-64)..............................10–500 Hz, 5 grms  
Operating vibration, sinusoidal  
(IEC 60068-2-6)................................10–500 Hz, 5 g  
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Operating shock  
(IEC 60068-2-27)..............................50 g, 3 ms half sine,  
18 shocks at 6 orientations;  
30 g, 11 ms half sine,  
18 shocks at 6 orientations  
Safety  
This product is designed to meet the requirements of the following  
standards of safety for electrical equipment for measurement,  
control, and laboratory use:  
IEC 61010-1, EN 61010-1  
UL 61010-1  
CAN/CSA-C22.2 No. 61010-1  
For UL, hazardous location, and other safety certifications, refer to  
the product label or visit ni.com/certification, search by  
model number or product line, and click the appropriate link in the  
Certification column.  
Electromagnetic Compatibility  
Emissions..........................................EN 55011 Class A at 10 m  
FCC Part 15A above 1 GHz  
Immunity...........................................EN 61326:1997 + A2:2001,  
Table 1  
CE, C-Tick, and FCC Part 15 (Class A) Compliant  
Note For EMC compliance, you must operate this device  
with shielded cabling.  
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CE Compliance  
This product meets the essential requirements of applicable  
European Directives, as amended for CE marking, as follows:  
Low-Voltage Directive (safety).........73/23/EEC  
Electromagnetic Compatibility  
Directive (EMC) ...............................89/336/EEC  
Note Refer to the Declaration of Conformity (DoC) for  
this product for any additional regulatory compliance  
information. To obtain the DoC for this product, visit  
ni.com/certification, search by model number or  
product line, and click the appropriate link in the  
Certification column.  
Mechanical Dimensions  
Figure 8 shows the mechanical dimensions of the FP-AI-110  
installed on a terminal base. If you are using the cFP-AI-110,  
refer to the Compact FieldPoint controller user manual for the  
dimensions and cabling clearance requirements of the Compact  
FieldPoint system.  
107.19  
[4.22]  
109.5  
[4.31]  
91.44  
[3.60]  
Figure 8. FP-AI-110 Mechanical Dimensions  
FP-AI-110 and cFP-AI-110  
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Where to Go for Support  
For more information about setting up the FieldPoint system, refer  
to these National Instruments documents:  
FieldPoint network module user manual  
Other FieldPoint I/O module operating instructions  
FieldPoint terminal base and connector block operating  
instructions  
Go to ni.com/support for the most current manuals, examples,  
and troubleshooting information.  
National Instruments corporate headquarters is located at 11500  
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© National Instruments Corp.  
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© 2003–2005 National Instruments Corp. All rights reserved.  
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