Owner's manual

5. Diagnostics and error handling
5−5
Festo P.BE−CPX−CMAX−SYS−EN en 0908NH
Acknowledging
malfunctions
Reported malfunctions must be acknowledged with
CCON.RESET. It might be necessary to remedy the cause of
the malfunction.
1. Positive edge on CCON.RESET.
2. Wait 3 s (depending on the malfunction, CMAX requires a
maximum of 3 seconds, e.g. for initialising the axis).
3. Check whether the malfunction has been remedied:
if SCON.FAULT = 0: ok
if SCON.FAULT = 1:
Check the malfunction number and eliminate any
cause. See section 5.2.4.
Fundamentally, CMAX always attempts to acknowledge the
currently pending malfunctions. If there are several malfunc
tions active at the same time, the behaviour is directed to
ward the most serious malfunction.
If there are several malfunctions registered and one
malfunc
tion can be cleared by resetting, but the others cannot, the
remaining malfunctions are displayed after the reset.
Warnings
Events and statuses which can potentially impair operation
are signalled as a warning. A list of warning messages can be
found in section 5.2.4.
Warning reaction In the case of warnings, CMAX does not have the Malfunc
tion" status, but continues to have Ready" status.
Warnings are reported with SCON.WAR N = 1. There is
no
effect on the sequence control or the axis.
Acknowledging warnings SCON.WARN is set = 0, depending on the warning:
 with the positive edge at CCON.START or CCON.RESET
(as far as the cause has been remedied).