When i Add effect link to output A50.0 in SAFETY matrix  

an error message appears : you are accessing an invalid or deactivated channel of the module 

i have problem only with this output  the others work normale

what is the problem??, thank you for answering 

You post in the wrong conference.

This conference is for STEP5, not for PCS 7.

Closed cause question posted twice.

The second thread with the subject PCS7 V 9.0 / SAFETY MATRIX 6.3 is published within the conference Process Control Systems SIMATIC PCS 7.