Festo CPX-FB32 Manual page 64

2. Commissioning
2-30
Requirements for parameterisation
You can influence the start characteristics with the system
parameter "System start". If possible, select the setting
"System start with default parameterisation and current CPX
expansion". The desired parameterisation can then be carried
out in the initialisation phase or user-controlled
(depending on the fieldbus used).
Note
The CPX terminal can only be parameterised if the
system parameter "System start" has the setting
"System start with default parameterisation and current
CPX expansion".
If the M LED lights up permanently after the system start,
then "System start with saved parameterisation and saved
CPX expansion" is set. In this case, no other parameterisation
can be carried out.
Caution
In the case of CPX terminals on which the M LED lights up
permanently, parameterisation will not be restored
automatically by the higher-order system if the CPX
terminal is replaced during servicing. In these cases, check
before replacement to see which settings are required and
carry out these settings.
Festo P.BE-CPX-FB32-EN en 1111a