Hello Jason, I need to HMI send data to device (GW636) and read/receive data from device (GW636) show as below
I try test about LevistudioU program with device (GW636) as you say. I can connect between HMI and device (GW636) (Com LED blink) when set HMI to be master (Device type:Modbus RTU slave All function) only but If set HMI to be slave it will not connect. When I can connect between HMI and device(GW636) already, HMI display show "No.1 Plc Addr 4_w_000002 COMM TimeOut!"
Why it is so? Can you help me please?
[12:05:37 PM] Jason.chen842: your device is as slave ,right?
[12:05:51 PM] Jason.chen842: the panle is as master,right?
[12:06:36 PM] Jason.chen842: Does your device support standard modbus rtu?
I doing check device