Instruction Manual

5. Diagnostics and error handling
5−23
Festo P.BE−CPX−SYS−EN en 0902e
Error numbers of error class 2
No. Eliminating faultsOperating statusHandheld display
28 [Alarm value reached] Alarm value reached Check operating conditions
See manual for the relevant
module
29 [Fault in parametrizing] Fault in parametrisation Check the parametrisation
undertaken and, if necessary,
undertake the parametrisa
tion again with the correct
parameters.
30 [No new output data
(slave)]
Fault in internal communica
tion (no new output data)
Replace module if Power Off/
On does not remedy problem
31 [No bus connection (slave)] Bus connection interrupted Make bus connection or
check configuration
32 [No STI read access (slave)] STI read access defective Repeat STI read access
33 [No parameter access
(slave)]
Read access parameter de
fective
Repeat read access parame
ter
34 [CP module lost / fault]  Incorrect string assignment
ascertained during opera
tion (e.g. CP module failed
or CP cable defective)
 More than one module fai
led during operation 
modules are no longer
recognised.
· Check CP strings (CP modu
les and CP cables), if ne
cessary replace CP modu
les or CP cables
· Switch power supply off
and then on again. If fault
still occurs, check and, if
necessary, replace CP ca
bles and CP modules
35 [CP configuration failure]  When the power supply is
switched on, the string as
signment does not match
the saved string assign
ment
 Incorrect module recogni
sed during operation (diffe
rent type, see manual for
CPX−CP interface)
· Check CP strings (CP modu
les and CP cables), if ne
cessary replace CP modu
les or CP cables
· With correct string assign
ment: String assignment
must be saved or (see ma
nual for CPX−CP interface)
· Check string assignment, if
necessary replace CP mo
dule