Addressing Rules - Festo CPX Series Manual

3 Commissioning as function module F24
3.2.2

Addressing rules

I/O counting mode
– The address assignment of the inputs does not depend on the address assignment of the outputs.
– The counting mode is independent of the position of the bus node.
– Counting from left to right, dependent on the installation position in the CPX terminal and depend-
ent on the module type.
– Digital I/O, analogue I/O and I/O of technology modules occupy their address volume ascending
respectively without gaps in the corresponding address space.
– Digital I/Os are mapped in the bit area, analogue I/O and I/O technology modules are mapped par-
allel in the word area, starting from the 1st station to be mapped.
– Remote Ready (RR, CC-Link-specifically reserved) always lies in the bit area at the end in the re-
spectively last occupied station resp. last used cycle (
– The status bits and the I/O diagnostic interface of the system diagnostics occupy, if activated, the
first 2 bytes respectively of the inputs and outputs of the word range of the 1st station
( e.g. Fig. 3.1).
Festo – P.BE-CPX-FB23-24-EN – 1305a – English
Fig. 3.1 and/or Fig. 3.2).
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