firstname.lastname@example.org Posted April 22, 2020 Report Share Posted April 22, 2020 I'm trying to read the registries in V130 with a modbus device using RS485 on COM1. I've changed the jumpers accordingly and in the software side, I've configured Com Init, Modbus config & Modbus Scan EX. I'm using a Simply Modbus Master simulator to test but for some reason I'm not getting any response from the PLC. Only the Rx values are incrementing when I request to read values but nothing is happening to the Tx numebrs. Any help on this would be great. Thanks Bailey Quote Link to comment Share on other sites More sharing options...
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