Dear all,

I have used S7-200  PLC (CPU 224XP CN) in my Project.As I am aware ,we can use only 7 expansion Modules with the CPU type mentioned above.I have connected 7 expansion modules.

Now Customer wants to add some IOs.As per thae data sheet of the CPU ,it is not possible to add further.

Can i add one more cpu? Is it possible to make the communication with the existing CPU?

so please kindly suggest me.

Regards,

N.Vidhyadaran

Hello,

Please have a look at the following link:

how is data exchanged between two SIMATIC S7-200 devices in PPI mode?

Best regards,

Wizard