4. Commissioning
4−42
Festo P.BE−CPX−CMA X−SYS−EN en 0908NH
4.6.3 Acknowledge malfunction
Active malfunction
SPOS.MC = 1
[m]
It is imperative that this action
be executed.
This action is a recommendation.
It does not have to be executed.
[m]
[o]
SPOS.MC = 0
SCON.FAULT = 0
SCON.FAULT = 1
Reset counter = 3
Timer
expired
Reset counter < 3
Timer
running
Reset counter = 1
[m]
[m]
[m]
[m]
[m]
[m]
[m]
Rising edge on
CCON.RESET
Start timer:
3 seconds
Reset counter
increment by 1
Reset not possible
Wait until malfunction reaction is finished.
(Attention: not in parametrising operating mode)
A reset is ignored before this.
Extended diagnostics are required,
e.g. with FCT.
Use a reset counter (of type integer) to limit the maximum number of resets.
CMAX always attempts to reset all active fault signals. It is not necessary to acknowledge them
multiple times. Consequential errors after acknowledgement could still occur, however. After
more than 3 attempts, cancel acknowledgement and carry out extended diagnostics, e.g.
with the FCT.
Rising edge means that CCON.RESET is registered at least long enough for CMAX to be able to
clearly recognize it. This time period depends on the used CPX node and the bus cycle time.
Recommendation: Time > 10 ms
Use a timer to limit the maximum CMAX reaction time. Different reactions are triggered in the
CMAX, depending on the fault number. The re−initialisation of the axis string takes the longest
(max. 3 seconds).
Reset successful
[o]
CCON.RESET = 0
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