Maximum number of NOC cards on a Modicon M580 processor on a 7-slot rack

Hello,

I'm working on a Schneider Electric Modicon M580 system which is on a 7-slot backplane with 3 NOC cards used for it's DIO network. I've reached maximum capacity of devices on these NOC cards and I can't add anymore on the existing NOC cards. There's an empty slot on the rack and my question is, is there a limitation to how many NOC cards an M580 PAC can handle?

Thanks in advance!

It depends on the CPU - looks like between 2 and 6, depending on the model. See page 67:

https://www.schneider-electric.us/en/download/document/HRB62666/

Thank you for the response. That document answers my question.