Festo PROFIBUD-DP, Elektronics Manual

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1. Installation CPV−DI02 and CPV−CS02
1−35
Festo P.BE−CPV−DI02−EN en 0704NH
1.6.1 Rules for extending the CPI system
The CPI system supports a different number of modules per
CP string, depending on the type of CP master and on the
CPI/CP modules connected.
The CPV Direct is a CPI master.
Modules can be placed in two different groups:
CPI modules (with extended functions)
CP modules (without extended functions)
R u l e s a n d prop e r tie s
C PI s y s te m Max. 4 modules on the CP string
Max. 32 inputs and 32 outputs (per CP string)
The sequence of the modules within the CP string is optional
C PI mas te r A mixture of CPI/CP modules is possible on CPI masters:
Only one CP input module is possible at the end of a string
Only one CP valve terminal
2)
or one CP output module
2)
is possible per CP string.
Unused" locations on the CP string can be filled" with CPI modules
1)
C PI m od u l e s Incoming and continuing interface on all CPI modules (input modules, output
modules) and valve terminals with CPI connection
1)
With extended functions
2)
Without extended functions
Tab.1/12: Rules for extending the CPI system
No te
Irrespective of the type of CPI/CP modules, not more than
32 inputs and 32 outputs may be connected (sum of all
modules on a CP string).
This means that a CP string can be extended by maximum
2 CP valve terminals with CPI ability, as CP valve terminals
always occupy 16 output addresses.