Posted 18 Dec 2015 Hi everyone! I have a PLC CP1L-EM30DR-D, once board RS485 CP1W-CIF11 for PLC and Sengenuity sensor Sengenuity sensor support RS485 via Modbus RTU. So i want to connect them, but i dont know how to do it Can anyone tell me what should i do?? Thank a lot! Share this post Link to post Share on other sites
Posted 24 Dec 2015 The link below provides sample Modbus RTU master code. This uses the PLCs Easy Modbus comms mode for the serial port. http://forums.mrplc.com/index.php?/files/file/867-easy-to-use-modbus-rtu-master-for-cp1l-cp1h-cj1-cj2-cs1/ Share this post Link to post Share on other sites