Festo HGPPI Series, Instructions Manual

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4. Commissioning
4−27
Festo P.BE−HGPPI−PB−E N en 0605NH
4.5.3 Instructions for commissioning the PROFIBUS
Switch on the power supply
Note
·
Please also observe the switching−on instructions in the
manual for your controller.
When the controller is switched on, it will automatically carry
out a comparison between the DESIRED and the ACTUAL con
figurations. It is important for this configuration run that:
the configuration specifications are complete and correct
the power supply to the PLC and the fieldbus stations are
either connected simultaneously or in the sequence speci
fied below.
Observe the following points before connecting the power
supply:
For common supply:
If there is a common supply for the control system and for
all the fieldbus stations, the power should be connected
via a central power supply unit or central switch.
For separate supplies:
If the control system and the fieldbus stations have
separate power supplies, the power should be switched
on in the following sequence:
1. Switch on the operating voltage supply for all fieldbus
stations.
2. Switch on the compressed air supply for the HGPPI−...
3. Switch on the operating voltage supply of the controller.