Rockwell Automation AADvance Controller Configuration Guide - Manual (Page 222)

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ICSTT-RM405f-EN-P
Issue 07
Configuration Guide (AADvance Controller)
Configure a Modbus Slave Link for Modbus RTU
Note: You have to create a Modbus slave link object below a Modbus master object
configured for Modbus RTU before you can carry out this task.
You have to configure each Modbus RTU slave link to suit its individual slave device.
Do the following:
1) Select the Equipment tab on the Project tree view and then select the slave link
you want to configure.
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The editor for the slave link opens.
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The editor has three tabs; the tabs are named General, Messages and Statistics.
2) Select the General tab.
3) Enter a suitable Name for the slave link, or accept the default. You can use any
combination of alphanumeric characters and punctuation, including spaces.
4) Set the Slave Id to a value that is unique amongst the slaves attached to the same
master.
5) Set the Retries field to the number of times the Modbus master should try to
retransmit a message to the slave if it does not receive a response.
Note: The Retries field is used in conjunction with the Message Timeout value
set for the Modbus master.
6) If you intend to use the control variable, set the Control Variable Address to
the Modbus address of the holding register; otherwise accept the default 0 to
disable.
7) Similarly set the Status Variable Address.