Schneider Electric Processor Adapter - Manual (Page 339)

Configuring an M1 CPU with Concept
870 USE 101 10 V.2 339
Changing Mode and Data Bits
Introduction From the Modbus Port Settings dialog box, each port can be configured to operate
in one of two possible modes – RTU or ASCII.
l If the mode is RTU, the number of data bits is always 8.
l If the mode is ASCII, the number of data bits is always 7.
Procedure To change the mode and data bit parameters, perform the steps in the following
table.
Note: The factory-set default is 8-bit RTU.
Step Action
1 Click on the down arrow under Mode.
Result: A menu appears displaying your two Mode options.
2 Click on the RTU or ASCII entry.
Result: The Ports setting Window is updated with the Mode type you have
specified, the corresponding Data Bit value appears.
Example: If you change Modbus Port 1 from RTU mode to ASCII mode, the Data
Bit value also automatically changes from 8 to 7.