Configuring an M1 CPU with Modsoft

Changing the Protocol on Modbus Port 2

Overview

If your Momentum M1 CPU is using the Modbus Port 2 provided by the 172 JNN

 

 

 

210 32 Option Adapter, you can specify whether it will use the RS232 or RS485

 

 

 

protocol. The factory-set default for Modbus Port 2 is RS232.

 

 

 

If you are using the Modbus Port 2 provided on the 171 CCS 780 00 or

 

 

 

171 CCC 780 10 Processor Adapter, the port is hardwired as a dedicated RS485

 

 

 

protocol. However, you must change the default setting on the Port editor screen

 

 

 

from RS232 to RS485, or the port will not function.

 

Procedure

 

 

From the Port editor screen, perform the steps in the following table to change the

 

 

 

Protocol on Modbus Port 2.

 

 

 

 

 

 

 

Step Action

 

1Place the cursor on the current Protocol entry for Modbus port 2. Push <Enter>.

Result: A popup window appears in the top left corner of the screen displaying the two protocol options:

2

Use an arrow key to toggle the cursor onto the desired protocol selection in the popup window, then push <Enter>.

Result: The Port editor screen is updated with the protocol you have specified.

870 USE 101 10 V.2

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Schneider Electric Processor Adapter manual Changing the Protocol on Modbus Port