Posted 22 Sep 2018 Hi, I want to sent simply frame using FB mady by JPV from Omron France. It should send just frame 01030FA60002273C to slave #1 When I check Multiway - it seems that frame is OK, but slave no reply. I checked different soft to monitor serial port and frame looks different - some bytes are sent twice. I attached screenshot and you can see the difference - Can you explain why it happened. Both frame I got when I set W30.0 in PLC and I saw just one blink LED Hmm I also attached screenshot from my serail port configuration. I tried also diiferent set of CP1W-CIF11 dip switches, but the same effect. Any clue??? thanks in advance Share this post Link to post Share on other sites
Posted 22 Sep 2018 Check with ModScan Software with data frame monitor to check pattern of data frame then compare with PLC Modbus Data Frame if it same it should be connect to slave device. Share this post Link to post Share on other sites
Posted 22 Sep 2018 Can you send via multi-way & get a response? my standard goto is to test with multi-way, both as a master & a slave for verification. Share this post Link to post Share on other sites
Posted 25 Sep 2018 I sent some frame from multiway as I attached and I got some reply but strange is that I get reply only if I sent frame and exktra "0000". If I send just a frame I get no response. I already sent some question to device producer, but not yet answer - just reply that device support standard modbus RTU Maybe you could explain that "0000", Share this post Link to post Share on other sites