72 analog input CPU 1212C

Hi to everyone

i have an application with 72 analog input that must be managed with an 1212C; i was thinking to use the CPU to manage the inputs in addition to ET200SP to reach the desired number of analog.

Is it possible?

The only rule that i have to follow is to remain under the 1024 byte of process image? or there is something else?

thanks in advance

Hello,

this should work, you be right with the 1024 byte process image

You should have analog inputs in maximum 8 IO-Devices.
This is the maximum number which can the 1212 control at the same time.

If you use analog cards of ET200SP with a value status then you need a byte more per module.

regards
CaOd

CaOd

Hello,

this should work, you be right with the 1024 byte process image

You should have analog inputs in maximum 8 IO-Devices.
This is the maximum number which can the 1212 control at the same time.

If you use analog cards of ET200SP with a value status then you need a byte more per module.

regards
CaOd

 Thanks for the answer

when you say "max 8 IO-devices" you mean maximum 8 profinet nodes? (examples: 8 IM155-6)

Hello,

yes, I mean maximum 8 Profinet-nodes like IM155-6...

regards
CaOd