Issue
For Modbus Serial communication between M241/M251/M262 and Altivar 320, does the Polarization Resistor setting need to be turned on?
Product Line
Altivar 320, Modicon M241, Modicon M251, Modicon M262, EcoStruxure Machine Expert / SoMachine
Environment
Serial Communication setup in PLC configuration software
Resolution
Yes, polarization must be turned on in the PLC as per p27 of the ATV320 Modbus Manual:
(Document Reference#NVE41308)
https://www.se.com/ww/en/download/document/NVE41308/
To apply the setting, in EcoStruxure Machine Expert (or the previous version SoMachine):
For Modbus Serial communication between M241/M251/M262 and Altivar 320, does the Polarization Resistor setting need to be turned on?
Product Line
Altivar 320, Modicon M241, Modicon M251, Modicon M262, EcoStruxure Machine Expert / SoMachine
Environment
Serial Communication setup in PLC configuration software
Resolution
Yes, polarization must be turned on in the PLC as per p27 of the ATV320 Modbus Manual:
(Document Reference#NVE41308)
https://www.se.com/ww/en/download/document/NVE41308/
To apply the setting, in EcoStruxure Machine Expert (or the previous version SoMachine):
- In the Devices Tree of your EcoStruxure Machine Expert / SoMachine project, expand the tree for your PLC.
- Doubleclick on the Serial_Line_1 (or Serial_Line_2)node
- Under "Physical Medium", choose "Yes" in the dropdown list for Polarization Resistor
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