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Configuring an M1 CPU with Modsoft
870 USE 101 00 V.3 215
Changing the Modbus Address
Overview Each port can be assigned a Modbus network address in the range 1...247. That
address must be unique with respect to all other device addresses on the same
Modbus networks.
Since Modbus Port 1 and Modbus Port 2 are always on different Modbus networks,
they can both be assigned the same address value without conflict. The factory-set
default for both ports is address 1.
Procedure From the Port editor screen, perform the steps in the following table to change the
Modbus Address:
Step Action
1 Place the cursor on the current Address entry for the Modbus port.
2 Type a number in the range 1...247. Push <Enter>.
Result: The Port editor screen is updated with the Address number you have
typed, and the cursor moves to the Delay column.