Festo CPX-FB14 Electronic Manual page 138

3. Diagnosis
3−22
Fault Error type
number
200 Error in parameter transfer to module
201 Invalid station number (node)
202 Bus protocol chip: not ready
203 reserved
204 205 See description for the relevant module
Tab. 3/14: CPX fault numbers (part 3)
Festo P.BE−CPX−FB14−E N en 0810b