riandanualdy

hallo, i have problem here. i want to connect HMI OMRON NB7W-TW00B to weighing indicator with Modbus RTU rs485. i use this link https://www.myomron.com/index.php?action=kb&article=1538 for wiring diagram for rs485. and the baudrate, databit, parity check and stop bit is same between HMI and weighing indicator. but the output in HMI is "[2] PLC No Response: 00-01-2" i think the problem is my rs485 connection. can you help me? thank you.

i use rs232 communication to Zebra Printer or Barcode scanner, what HMI can i use for that? thank you

nah im not sure about that, but in this link https://www.myomron.com/index.php?action=kb&article=1538 and https://www.youtube.com/watch?v=SFnNvZmEWX8 , HMI NB7W can connect to non plc. i just want to try connect my weighing indicator connect to HMI because im doing research about weighing indicator. thank you

i try use com 1 to PLC omron and its working, but i want to try com 2 to connect to weighing indicator via modbus RTU rs485 but the output is "2] PLC No Response: 00-01-2"