Dear All
I have some trouble.
I'm trying to send message from module 3G GSM to port 502 of PLC M251 through internet.
- Port 502 of PLC M251 opened. I used port forwarding.
- Program send message is ok.
- At PLC M251 receive message, I write program receive as below image, but I cannot receive message.
Please help me some advise. Thank alots.
I have some trouble.
I'm trying to send message from module 3G GSM to port 502 of PLC M251 through internet.
- Port 502 of PLC M251 opened. I used port forwarding.
- Program send message is ok.
- At PLC M251 receive message, I write program receive as below image, but I cannot receive message.
Please help me some advise. Thank alots.