I would like to know if one can use a 6ES5721-0CD20 instead of 6ES5721-0CE00.
If anybody has information or datasheets for 6ES5721 - 0XXX0 please forward it to me.
Any information or help is most appreciated.
You've checked that the terminator is installed at the last card in the line, yes? It's been a while since I did S5, but I remember that's an easy way to not have things work.
I have gathered information from Siemens AG that both the cables are same but different lenghth. That rules out the cable problem. I am looking at ordering a new power supply and rack. will update as soon as i track the problem.