Festo CPX-M-FB20 Manual page 61

2. Commissioning
Byte assignment
of the input bytes
IB 20
Siemens mode:
IB 21
Standard mode:
4DI
Byte assignment
of the output bytes
OB 22
Siemens mode:
OB 23
Standard mode:
IB = input byte; OB = output byte; diagnostics optional
Fig. 2/6: Byte assignment of a CPX terminal after extension/conversion
Festo P.BE-CPX-FB20/21-EN en 1202a
The following diagram shows the changes which occur to the
address assignment when the equipment fitted in example 1
is modified. On the I/O module side an 8-input module has
been replaced by a 4-input module. On the valve side, a valve
plate has been added and the pneumatic interface has been
set to 16 O.
IB 21 IB 22 IB 23
IB 20 IB 23 IB 22
8DI 8DO 4DO 8DI 8DO
OB 23 OB 24 OB 25
OB 22 OB 25 OB 24
IB 24 IB 25
IB 25 IB 24
4DO
16 O
OB 20 OB 21
OB 21 OB 20
2-17