Posted 8 Sep 2022 Hi community, i need help .... I want to connect my HMI GOT 1455 to a PLC OMRON CP2MC by RS-232, but i cant do it. I'm using the following connection: HMI GOT1455 - PLC CPM2C (Interfaz CS1W-CN118) 2 (RX) - 2 (TX) 3 (TX) - 3 (RX) 5 (SG) - 9 (SG) - 4 (RTS) - 5 (CTS) * PIN 4 (RTS) IS CONNECTED WITH PIN 5 (CTS) In the HMI I configurated driver OMRON SYSMAC, CHANNEL 2 RS-232, TRANSMISSION SPEED 19.200, DATA BIT 7, STOP BIT 2, PARITY EVEN. But with all of that I can't connect both devices. In the PLC i can see the led COMM blinking, so it should have communication, but the HMI show me "Communication error. Refer to System Alarm in Utility Menu" Share this post Link to post Share on other sites
Posted 9 Sep 2022 I've never connected a GOT to Omron before and I don't know much about the GOTs. From the Omron PLC side, default serial parameters are 9600, 7, E, 2. If you change any settings, make sure to cycle the power to the PLC. Share this post Link to post Share on other sites
