Problem accessing Mitsubishi A-Series CPU

[philip.joebstl]

Hallo,

I'm trying to connect the iX T4A - Panel to a Mitsubishi A-Series CPU (CPU-Port). Communication settings should be correct, we tried with both COM-Ports and each of them with RS232 and RS422, and we also deleted the build files and rebuild after setting the communication. But still there is the connection error showing up.

Do you have any ideas to try, or is the driver itself not working correctly?

MELSEC A-Series ComSettings.png (34.66 KiB) Viewed 7761 times

[mark.monroe]

You should take a look at this forum post. About the only way to debug such problems is to sniff the serial port traffic on the line. You should see traffic coming from the HMI and whether or not the Controller is responding to those requests.