Hi 

I need to change a 6ES7 151-7FA01-0AB0 by new one 6ES7151-7FA21-0AB0, Do I need to change the de HW or the module is plug and play?

And, the old memory card is consistent with the new module? 

Hello CP341 V2,

please be so kind and don't post twice or more for the same problem.
Thanks.

You post also here:

https://support.industry.siemens.com/tf/ww/en/posts/6es7-315-6ff01-0ab0/223980/?page=0&pageSize=10#post888131

Closed cause question posted twice.

The second thread with the subject 6ES7 315-6FF01-0AB0 is published within the conference SIMATIC S7-300 / S7-300F.

Best regards
Jen_Moderator