Festo CPX-M-FB20 Manual page 76

2. Commissioning
Fig. 2/15: Enter process data – Example for "Siemens mode"
2-32
You can define the I/O addresses in the following dialogue
window. In this way you can adapt the I/Os of the CPX
terminal to the PLC used. The following diagram shows the
byte-by-byte assignment for a Siemens S7:
Festo P.BE-CPX-FB20/21-EN en 1202a