Majster29 Posted May 26, 2022 Report Share Posted May 26, 2022 Hi, I have a PLC V570 with an EX90 module after installing a new OS the PLC does not communicate with the expansion module. Is it possible to update the EX90 module in any way? Quote Link to comment Share on other sites More sharing options...
MVP 2022 Flex727 Posted May 26, 2022 MVP 2022 Report Share Posted May 26, 2022 Did you try reverting back to the previous OS? Why did you upgrade the OS? I direct you to this thread: Quote Link to comment Share on other sites More sharing options...
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