Changing CPU in a project from 315-2DP to a 315 - 2PN DP

Hello All, this is my first post so bare with me

I have a machine running with a 315-2DP CPU I want to change it to a 315F 2PN-DP however im having some issues. The cpu I have has connections with a CP card on two other plcs. my plc reads data from a datablock on each cpu to use in its own program.

after changing the cpu . the connections were deleted so i reconfigured them. attached is a screen shot of the two project windows.

one fault i have realised if i go online witht the original CPU 2-DP. then i can click on SIMATIC 300 MA.1 and SIMATIC 300 MA.2. however when i do it with my new CPU its greyed out and says its unreachable. also the other fault is the datablock in my CPU where the data should be held is blank. which means its not getting the data is should.

hope i have explained my first post well enough! *fingers crossed*

Hi

It would be better if you can put a screen shot of HW Config or network view of your system.

Regards,

poya