Festo CPX-FB38, Electronic Manual

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2. Commissioning
2−43
Festo P.BE−CPX−FB38−EN en 0804NH
2.5.2 General prerequisite for parameterisation
Please note
A CPX terminal can only be parameterised if the function
System start with default parameterisation and current
CPX expansion" is activated (set System start" system
parameter accordingly).
With the System start" system parameter, you can
determine the starting reaction of the CPX terminal. Select the
System start with default parameterisation and current CPX
expansion" setting to permit the required parameterisation.
To perform the parameterisation, use the CPX−FMT or
CPX−MMI. If the parameterisation is not changed, the factory
settings are used.
After parameterisation, you change the setting of the
Systemstart" system parameter to System start with saved
parameterisation and saved CPX expansion". This fixes the
settings and stores them in the module.
After a new start of the CPX terminal, the bus node diagnostic
LED Modify" (M) lights up permanently. The terminal uses
the saved parameter settings.
Caution
In the case of CPX terminals on which the M LED lights up
permanently, parameterisation will not be restored auto
matically by the higher−order system
upon replacement .
In these cases, check before replacement to see which
settings are required and carry out these settings.