ProSoft Technology MVI56E-MNETC - Manual (Page 57)

MVI56E-MNETC ♦ ControlLogix Platform Configuring the MVI56E-MNETC Module
Modbus TCP/IP Client Enhanced Communication Module User Manual
ProSoft Technology, Inc. Page 57 of 183
February 3, 2013
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 56) 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, 7, 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 Description
1 Read Coil Status
2 Read Input Status
3 Read Holding Registers
4 Read Input Registers
5 Force (Write) Single Coil
6 Preset (Write) Single Register
7 Read Exception Status
15 Force Multiple Coils
16 Preset Multiple Registers