Omron CS1G- Cpu43

[valerianlin 0]

Hello,
I am fairly new to PLCs and have little experience with them so I thought if anyone here could help it would be great. The project that I have been given involves the OMRON CS1g- CPU 43 provided by the school. Once I plug in the power supply, the ERR/ALM red indicator lights up right away without any of the other indicators other than RDY from the CPU and POWER from the power supply.

First I have tried using a third party serial to usb cable to connect from my laptop to the plc and that did not work, I got a PLC failed to connect. 
I have tried a direct serial connection from the PC to the PLC using an RS232 Dsub 9 pin female to male and have tried auto online/direct connect on an older computer with a serial port, and after auto searching for a while the error comes up which says failed to connect to the pLC. I Googled the ERR/ALM indicator and found out that it was a fatal error however am not sure which one because I can't even connect the PLC to the computer properly. I have tried at least 3 other PLCs all of which are the same model but to no avail. They all have the same problem. I should mention these models are quite old they have been sitting in the closet for god knows how long. My suspicion is that I will need to get OMRON's CS1W cable for it to work since that one has the correct drivers however it is a couple hundred bucks.

Anyways my question is does this fatal error prevent me from properly connecting to the PC? Is there a possible remedy? I'm running a bit behind schedule so I'd appreciate anyone help.

Thank You

[Jay Anthony 118]

The fatal error is probably because there is no program loaded.

Please describe the pin out that you are using to connect to the DB9 on the CS1G-CPU.  It is not a standard pin out.

Also make sure that DIP Switch 5 is to the ON position

C200HS-CN220-EU Serial Cable.pdf

[Jay Anthony 118]

BTW:  Omron Tech support is right there in Toronto.

[valerianlin 0]

Hi Jay,

Thanks for replying. It looks like I'll have to see what cable I'm using because it seems a standard serial cable will not work based on the omron pinout you just sent me.

Pin 5 has already been turned on I guess the problem lies with the third party cable I'm using.

Thanks for replying will update when I get back to school.