CQM1H-CPU51,CQM-CIF02

[pszczepan 2]

Hi ! CQM1H has two ports - peripheral is connected to CIF11 and RS232 to NT11. Recently it stopped working as before. Using RS232 I could connect CX Programmer with PLC. CQM1H has adapter CS1W-CN114. To establish connection I used CQM-CIF02 and set PLC DIP switch 5 to ON. I couldn't make connection. I used also option in CX Programmer - Network settings / Scan Serial Ports for PLCs. I set all bauds rates and cable types. It didn't find any PLC. CIF02 - is OK - I connected without problem to CPM1A. Does it mean that peripheral port in my CQM1H burnt out?

[pfort 20]

I saw a couple of times defective peripheral port on CQM1 because of the battery that has leak

[IO_Rack 181]

The fact the peripheral port is connected to the NT11 via the RS232 to RS422 adapter may mean custom settings on the PLC's peripheral port. Check the PLC 'Settings' > 'Peripheral Port' tab and verify it is set to 'Standard' for communications with CX Programmer via your CQM-CIF02 cable. I believe DIP switch #5 sets only the RS232 serial port to standard.