Festo CPX-FB6 Manual page 65

2. Commissioning
Byte assignment
of the input bytes
IB 20
Siemens mode:
IB 21
Standard mode:
4DI
Byte assignment of
the output bytes
OB 20
Siemens mode:
OB 21
Standard mode:
IB = input byte; OB = output byte; status bits or I/O diagnostic interface optional
Fig. 2/8: Byte assignment of a CPX terminal after extension/conversion
Festo P.BE-CPX-FB6-EN en 1207c
The following diagram shows, as an example, what changes
occur to the address assignment when the equipment from
example 1 is modified. On the I/O module side, an 8-off input
module has been replaced by a 4-off input module. On the
valve side, a valve has been added and the pneumatic inter-
face has been set to 16 O.
IB 21 IB 22
IB 20 IB 23
8DI 8DO 4DO 8DI 8DO 4DO
OB 21 OB 22
OB 20 OB 23
IB 23 IB 24 IB 25
IB 22 IB 25 IB 24
16 O
OB 23 OB 24 OB 25
OB 22 OB 25 OB 24
IB 26 IB 27
IB 27 IB 26
OB 26 OB 27
OB 27 OB 26
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