FieldServer Modbus Plus FS 8700 02 User Manual

A Sierra Monitor Company  
Driver Manual  
(Supplement to the FieldServer Instruction Manual)  
FS-8700-02 Modbus Plus  
APPLICABILITY & EFFECTIVITY  
Effective for all systems manufactured after May 1, 2001  
Instruction Manual Part Number FS-8700-02  
Version 1.00  
Revision 1a  
5/24/2002  
FS -8700-02 Modbus Plus  
Driver Manual  
1. Modbus Plus Description  
The Modbus Plus driver allows the FieldServer to transfer data to and from devices using  
Modbus Plus protocol. The FieldServer can emulate either a Server or Client.  
The information that follows describes how to expand upon the factory defaults provided in the  
configuration files included with the FieldServer.  
The FieldServer is shipped with the switches set of a default address of 11.  
Set the Modbus Plus address switches 1--6 to the address in your application. Switches 7 and 8  
are not used.  
Switch 1 is the least significant bit of the address. Switch 6 is the most significant bit. The address  
will be one higher than the binary value you set into the switches.  
1.1 Hardware/Software  
Supplied by FieldServer  
FieldServer  
Technologies PART #  
FS-8915-01  
DESCRIPTION  
Adapter Card, Modbus Plus, Single Port. User must supply  
Modbus Plus cables and connectors, including termination  
connectors as documented by Group Schneider/Modicon  
Provided by user  
PART #  
DESCRIPTION  
Refer to the Drawings in section 3  
1
Modbus Plus Client, e.g. Wonderware, Intellution FIX, GE  
Cimplicity, etc.2  
1 If FieldServer used as Modbus Plus Client.  
2 If FieldServer used as Modbus Plus Server.  
Table 1: Modbus Plus Addresses and Switch Settings  
Address Switches 6--1  
Address Switches 6--1  
Address Switches 6--1  
1
0 0 0 0 0 0  
0 0 0 0 0 1  
0 0 0 0 1 0  
0 0 0 0 1 1  
0 0 0 1 0 0  
0 0 0 1 0 1  
0 0 0 1 1 0  
0 0 0 1 1 1  
0 0 1 0 0 0  
0 0 1 0 0 1  
0 0 1 0 1 0  
0 0 1 0 1 1  
0 0 1 1 0 0  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
0 1 0 1 1 0  
0 1 0 1 1 1  
0 1 1 0 0 0  
0 1 1 0 0 1  
0 1 1 0 1 0  
0 1 1 0 1 1  
0 1 1 1 0 0  
0 1 1 1 0 1  
0 1 1 1 1 0  
0 1 1 1 1 1  
1 0 0 0 0 0  
1 0 0 0 0 1  
1 0 0 0 1 0  
45  
46  
47  
48  
49  
50  
51  
52  
53  
54  
55  
56  
57  
1 0 1 1 0 0  
1 0 1 1 0 1  
1 0 1 1 1 0  
1 0 1 1 1 1  
1 1 0 0 0 0  
1 1 0 0 0 1  
1 1 0 0 1 0  
1 1 0 0 1 1  
1 1 0 1 0 0  
1 1 0 1 0 1  
1 1 0 1 1 0  
1 1 0 1 1 1  
1 1 1 0 0 0  
2
3
4
5
6
7
8
9
10  
11*  
12  
13  
FieldServer Technologies 1991 Tarob Court, Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
Page 1  
FS -8700-02 Modbus Plus  
Driver Manual  
Address Switches 6--1  
Address Switches 6--1  
Address Switches 6--1  
14  
15  
16  
17  
18  
19  
20  
21  
22  
0 0 1 1 0 1  
0 0 1 1 1 0  
0 0 1 1 1 1  
0 1 0 0 0 0  
0 1 0 0 0 1  
0 1 0 0 1 0  
0 1 0 0 1 1  
0 1 0 1 0 0  
0 1 0 1 0 1  
36  
37  
38  
39  
40  
41  
42  
43  
44  
1 0 0 0 1 1  
1 0 0 1 0 0  
1 0 0 1 0 1  
1 0 0 1 1 0  
1 0 0 1 1 1  
1 0 1 0 0 0  
1 0 1 0 0 1  
1 0 1 0 1 0  
1 0 1 0 1 1  
58  
59  
60  
61  
62  
63  
64  
1 1 1 0 0 1  
1 1 1 0 1 0  
1 1 1 0 1 1  
1 1 1 1 0 0  
1 1 1 1 0 1  
1 1 1 1 1 0  
1 1 1 1 1 1  
* = default  
Table 2: Summary of Modbus Data Access Commands  
Function Code (Decimal)  
1
2
3
4
5
Command Name  
Read Discrete Output Status (0xxxx)  
Read Discrete Input Status (1xxxx)  
Read Output Register (4xxxx)  
Read Input Register (3xxxx)  
Force Single Coil (0xxxx)  
6
15  
16  
Preset Single Register (4xxxx)  
Force Multiple Coils (0xxxx)  
Preset Multiple Registers (4xxxx)  
Modbus Plus Card Indicators  
The Modbus Plus card has an indicator that flashes a repetitive pattern to show its network  
communication status, plus two indicators which identify communication errors on the two  
Modbus Plus cable paths. Note that one error indicator will be lit normally in single-cable  
installations, showing that a second cable does not exist.  
Table 3: Modbus Plus Active Indicator Patterns  
Indicator Pattern (Green)  
Six flashes/second  
Status  
Normal operating state. All nodes on a healthy  
network flash this pattern  
One flash/second  
The node is off-line. After being in this state for 5  
seconds, the node attempts to go to its normal  
operating state.  
Two flashes, then OFF for 2 The node detects the network token being passed  
seconds  
among other nodes, but it never receives the  
token.  
Three flashes, then OFF for  
1.7 seconds  
The node does not detect any token passing on the  
network.  
Four flashes, then OFF for  
1.4 seconds  
The node has detected another node using the  
same address.  
FieldServer Technologies 1991 Tarob Court, Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
Page 2  
FS -8700-02 Modbus Plus  
Driver Manual  
2. FieldServer as a Modbus Plus Client  
2.1 Hardware Connections  
It is possible to connect a Modbus RTU device to any of the eight RS232 ports or two RS485  
ports. These ports just need to be configured for Modbus RTU in the configuration file.  
Configure the PLC according to manufacturer’s instructions.  
2.2 Configuration File Structure  
Refer to section 4.1 of the Instruction Manual for a description of the operation principle  
of the FieldServer. The following tables describe parameters that need to be filled out in  
the configuration file. For convenience, a few example parameters already exist in the  
supplied PRIMSERV.CSV and SECDSERV.CSV files.  
Note that * indicates an optional parameter, with the bold legal value being the default.  
2.2.1 Data Arrays  
Section Title  
Data_Arrays  
Column Title  
Data_Array_Name  
Function  
Provide name for Data Array  
Legal Values  
Up to 15  
alphanumeric  
characters  
Data_Format  
Provides data format  
INT16, INT32, BIT,  
FLOAT  
Data_Array_Length  
Number of Data Objects  
1-10,000  
2.2.2 Client Side Connections  
Section Title  
Connections  
Column Title  
Adapter  
Function  
Adapter name  
Legal Values  
MBP  
2.2.3 Client Side Nodes  
Section Title  
Nodes  
Column Title  
Node_Name  
Function  
Provide name for node  
Legal Values  
Up to 32  
alphanumeric  
characters  
Route  
Modbus Plus Path  
Note 1*  
Protocol  
Specify protocol used  
Modbus Plus  
Note 1: Refer to the Modicon user guide 890 USE 102 00 for details on path  
establishment. In general, the first number is the Destination BM85 MAC address,  
the second number represents the internal path, and the third number is the  
destination node. This varies if the BM85 is not connected to the FieldServer.  
FieldServer Technologies 1991 Tarob Court, Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
Page 3  
FS -8700-02 Modbus Plus  
Driver Manual  
2.2.4 Client Side Map Descriptors  
Section Title  
Map_Descriptors  
Column Title  
Map_Descriptor_Name  
Function  
Name of this Map Descriptor Up to 32  
alphanumeric  
characters  
Legal Values  
Data_Array_Name  
Data_Array_Offset  
Name of Data Array where  
data is to be stored in the  
FieldServer  
Starting location in Data  
Array  
One of the Data Array  
names from “Data  
Array” section above  
0 to maximum  
specified in “Data  
Array” section above  
RDBC  
Function  
Function of Client Map  
Descriptor  
Node_Name  
Name of Node to fetch data  
from  
One of the node  
names specified in  
“Client Node  
Descriptor” above  
Address  
Length  
Starting address of read block 40001, 30001, etc  
Number of items to read  
1 - 125  
Data_Array_Low_Scale* Scaling zero in Data Array  
-32767 to 32767,  
default 0  
Data_Array_High_Scale* Scaling max in Data Array  
-32767 to 32767,  
default 100  
Node_Low_Scale*  
Node_High_Scale*  
Scaling zero in Connected  
Node  
Scaling max in Connected  
Node  
-32767 to 32767,  
default 0  
-32767 to 32767,  
default 100  
FieldServer Technologies 1991 Tarob Court, Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
Page 4  
FS -8700-02 Modbus Plus  
Driver Manual  
3. FieldServer as a Modbus Plus Server  
3.1 Hardware Connections  
Refer to the Drawings in section 4  
Configure the Modbus Plus client according to manufacturer’s instructions (refer to  
section below on examples of FieldServer setup for typical clients  
3.2 Configuration File Structure  
Refer to section 4.1 of the Instruction Manual for a description of the operation principle  
of the FieldServer. The following tables describe parameters that need to be filled out in  
the configuration file. For convenience, a few example parameters already exist in the  
supplied PRIMSERV.CSV and SECDSERV.CSV files.  
Note that * indicates an optional parameter, with the bold legal value being the default.  
3.2.1 Data Arrays  
SectionTitle  
Data_Arrays  
Column Title  
Data_Array_Name  
Function  
Provide name for Data Array  
Legal Values  
Up to 15  
alphanumeric  
characters  
Data_Format  
Provides data format  
INT16, INT32, BIT,  
FLOAT  
Data_Array_Length  
Number of Data Objects  
1-10,000  
3.2.2 Server Side Connections  
Section Title  
Connections  
Column Title  
Adapter  
Function  
Adapter name  
Modbus Plus data path  
Legal Values  
MBP  
1 - 8  
Internal Path  
3.2.3 Server Side Nodes  
Section Title  
Nodes  
Column Title  
Node_Name  
Function  
Provide name for node  
Legal Values  
Up to 32  
alphanumeric  
characters  
Node_ID  
Protocol  
Node ID of virtual server node  
Specify protocol used  
1 – 255  
Modbus Plus  
FieldServer Technologies 1991 Tarob Court, Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
Page 5  
FS -8700-02 Modbus Plus  
Driver Manual  
3.2.4 Server Side Map Descriptors  
Section Title  
Map_Descriptors  
Column Title  
Map_Descriptor_Name  
Function  
Name of this Map Descriptor Up to 32  
alphanumeric  
characters  
Legal Values  
Data_Array_Name  
Data_Array_Offset  
Name of Data Array where  
data is to be stored in the  
FieldServer  
Starting location in Data  
Array  
One of the Data Array  
names from “Data  
Array” section above  
0 to maximum  
specified in “Data  
Array” section above  
Server  
Function  
Function of Client Map  
Descriptor  
Node_Name  
Name of Node to fetch data  
from  
One of the node  
names specified in  
“Client Node  
Descriptor” above  
Address  
Length  
Starting address of read block 40001, 30001, etc  
Number of items to read  
1 - 125  
Data_Array_Low_Scale* Scaling zero in Data Array  
-32767 to 32767,  
default 0  
Data_Array_High_Scale* Scaling max in Data Array  
-32767 to 32767,  
default 100  
Node_Low_Scale*  
Node_High_Scale*  
Scaling zero in Connected  
Node  
Scaling max in Connected  
Node  
-32767 to 32767,  
default 0  
-32767 to 32767,  
default 100  
3.3 Examples of FieldServer setup for typical clients  
MSTR Example: Modbus Plus Node  
This example shows a Modicon Modsoft screen for an MSTR function in a Modbus Plus  
node. It writes one register of data to a virtual node in the FieldServer.  
H
H
H
H
The MSTR Function Code specifies a Write operation  
One register of data is to be transferred  
The destination register is 40000 (addressed as register 1).  
The FieldServer’s node address is 1. Note that the decimal value 1025  
equals 0401 hexadecimal, addressing a Modbus Plus Network Option  
Module (NOM) in backplane slot 04 and a node at address 01.  
H
The destination index is 28. The FieldServer will forward the message to  
the TCP node whose IP address is in this location in the FieldServer’s TCP  
Mapping table.  
FieldServer Technologies 1991 Tarob Court, Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
Page 6  
FS -8700-02 Modbus Plus  
Driver Manual  
MSTR in Modbus Plus Node  
FieldServer Technologies 1991 Tarob Court, Milpitas, California 95035 (408) 262-2299 fax: (408) 262-9042  
Page 7  

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