Rockwell Automation Publication 2080-UM002K-EN-E - March 2019 245
Modbus Mapping for Micro800 Appendix B
5. Select Parameters from the Connected Components Workbench window.
6. The Parameter window opens. Resize it to view the parameters. From this
window, you can view and set data values of Parameters.
7. From the Parameter window, change the following Parameters to set the
communications for Modbus RTU so that the PowerFlex 4M Drive will
communicate with Micro830/850/870 via Modbus RTU communication.
8. Disconnect the Communications and save your project.
9. Turn off the power to the drive until the PowerFlex 4M display blanks out
completely, then restore power to the PowerFlex 4M.
The drive is now ready to be controlled by Modbus RTU communication
commands initiated from the Micro830/850/870 controller.
Parameter Description Setting
C302 Comm. Data Rate (Baud Rate) 4 = 19200 bps 4
C303 Communication Node Address (address range is 1…127) 2
C304 Comm. Loss Action ( Action taken when loss communication) 0 =
Fault with coast stop
0
C305 Comm. Loss Time (Time remain in communication before taking
action set in C304) 5 sec ( Max. 60)
5
C306 Comm. Format (Data/Parity/Stop) RTU:8 Data Bit, Parity None, 1
Stop bit
0
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