For Modbus Serial communication between M241/M251/M262 and Altivar 320 Polarization Resistor?
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.schneider-electric.com/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
If this FAQ did not solve your issue, you can chat with us at chat with us or e-mail us at customer.services@se.com to create a case with our Technical Support Team.
If you are not located in North America, please contact your local Customer Care Center for assistance:
Released for: Schneider Electric Canada
Need help?
Product Selector
Quickly and easily find the right products and accessories for your applications.
Get a Quote
Start your sales inquiry online and en expert will connect with you.
Where to buy?
Easily find the nearest Schneider Electric distributor in your location.
Help Center
Find support resources for all your needs, in one place.