ProSoft Technology inRAX MVI56E-MNETCR User Manual page 58

Configuring the MVI56E-MNETCR Module
User Manual
Node IP Address
xxx.xxx.xxx.xxx
The IP address of the device being addressed by the command.
Service Port
502 or other supported ports on server
Use a value of 502 when addressing Modbus TCP/IP servers that are compatible
with the Schneider Electric MBAP specifications (this will be most devices). If a
server implementation supports another service port, enter the value here.
Slave Address
0 - Broadcast to all nodes
1 to 255
Use this parameter to specify the slave address of a remote Modbus Serial
device through a Modbus Ethernet to Serial converter.
Note: Use the Node IP Address parameter (page 58) to address commands to a remote Modbus
TCP/IP device.
Note: Most Modbus devices accept an address in the range of only 1 to 247, so check with the
slave device manufacturer to see if a particular slave can use addresses 248 to 255.
If the value is set to zero, the command will be a broadcast message on the network. The Modbus
protocol permits broadcast commands for write operations. Do not use node address 0 for read
operations.
Modbus Function
1, 2, 3, 4, 5, 6, 15, or 16
This parameter specifies the Modbus Function Code to be executed by the
command. These function codes are defined in the Modbus protocol. The
following table lists the purpose of each function supported by the module. More
information on the protocol is available from www.modbus.org.
Modbus Function Code
1
2
3
4
5
6
15
16
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Modbus TCP/IP Multi Client Enhanced Communications Module for Remote Chassis
Description
Read Coil Status
Read Input Status
Read Holding Registers
Read Input Registers
Force (Write) Single Coil
Preset (Write) Single Register
Force Multiple Coils
Preset Multiple Registers
MVI56E-MNETCR ♦ ControlLogix Platform
ProSoft Technology, Inc.
June 14, 2011