Festo CPV...-GE-CO3-8 series, Electronic Manual

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1. Installation
1-39
Festo P.BE-CPV-CO3-EN en 1201a
1.7.2 Saving the string assignment
Warning
Be very careful if the string assignment of your CPI system
is modified at a later stage:
•
After saving the string assignment, check the address
assignments of your CPI system before starting user
programs.
You will then avoid addressing faults in the case of incor-
rectly fitted CPI/CP modules.
String assignment The CPV Direct saves the type and the sequence of the
connected CPI/CP modules for the CP string (string
assignment).
The saved string assignment enables the CPV Direct to avoid
faults in connecting, and thus addresssing. It checks auto-
matically to see if the current string assignment is the same
as the saved assignment. A distinction is made here between
the following test phases:
– testing during the start-up phase (see section 1.8)
– testing during operation (see section 1.9).
When the status LEDs on all the CPI/CP modules light up, the
CPI system is prepared for commissioning. You can now com-
mission the CPI system.