Instruction Manual
4. Commissioning
4−10
Festo P.BE−CPX−SYS−EN en 0902e
4.3 Start−up behaviour of the CPX terminal
The desired parametrisation of the CPX terminal should be
carried out in the start−up phase or after fieldbus interrup
tions by the plug−in module or the scanner/bus master, pro
viding this is supported by the fieldbus protocol used. In this
way you can be sure that when a CPX terminal has been re
placed, the new terminal is operated with the same para
meter settings.
You can influence the start−up behaviour with the aid of the
system parameter System start (see section B.2.2). If possible
select the setting System start with default parameterising
and current CPX system equipment". The desired parameter
ising can then be created in
the start−up phase or after field
bus interruptions e.g. by the plug−in module or the scanner/
bus master (depending on the fieldbus used).
If the MLED lights up permanently after the system start,
then System start with saved parametrising and saved CPX
system equipment" is set.
Caution
In the case of CPX terminals on which the M−LED lights up
permanently, parametrising will not be restored automati
cally by the higher−order system if the CPX terminal is re
placed after servicing. In these cases check before repla
cing to see which settings are required and carry out these
settings.
Detailed instructions
can be found in the manual for the spe
cific CPX bus node or the manual for the handheld.