You need an add-on software for STEP5 called COM143.
Here is a manual:
https://cache.industry.siemens.com/...t_78016/v1/6GK1970-1AC43-0AA1_01-V2-B1-DO.pdf
If you dont have COM143 already, then I think you can forget about it.
Siemens does not sell it anymore.
You should think about how to replace the S5 based system with an uptodate system.
Any effort and expense you put in the old S5 system only gives temporary relief.
Not sure what you mean. The "plugs" on the back are connectors to insert the CP in the backplane. A CP143 can be directly insterted in a 135U or 155U rack. I believe that you need an adapter module to let the CP143 be inserted in a 115U rack.Do you know if both of the plugs at the back of the CP 143 card need to be plugged in?
I think you are refering to the EPROM memory module slot in the CPU.The CPU and rack I've been given online has one plug available at the top?