Address Assignment Of The Cpx Terminal - Festo CPX-M-FB20 Manual

2. Commissioning

2.1.2 Address assignment of the CPX terminal

2-8
Basic rules for addressing
Inputs and outputs
– The address assignment of the inputs does not depend on
the outputs.
– The counting mode is independent of the position of the
bus node.
– Counting from left to right.
– The setting for the number of valves on the pneumatic
interface of 1 and 3 bytes is always rounded up to the full
word (2 or 4 bytes).
– Sequence:
– For diagnostics mode 2:
32 diagnostic bits in front of the input bits.
– Input/output words of the analogue modules,
– Input/output words of the function modules (word-
orientated),
– Input/output bits of the electric inputs and outputs
(including valves):
– For diagnostics mode 3:
16 diagnostic bits followed by the input bits from the
next word.
– For diagnostics mode 4:
32 diagnostic bits followed by the input bits from the
next word.
Festo P.BE-CPX-FB20/21-EN en 1202a