Posted 21 Jun 2019 Dear All I am new to plc. i want to communicate a device with plc. the device is icp con module (i7055 ) which is DO/DI of 8 channels.. i want to send some command from plc to the module for DI. the device output is RS-485. but device protocol is DCON . i have FX3u-48m with RS232-bd and second FX3u-485ADP-MB. can someone guide me the procedure or the key point how can i do that . as there is no information in the FX3u-485adp-MB manual . Kindly help me out for life saving. Share this post Link to post Share on other sites