Acknowledge Malfunction - Festo CPX-CMAX-C1-1 Mounting, Installation And Diagnostics

4. Commissioning

4.6.3 Acknowledge malfunction

Active malfunction
SPOS.MC = 0
[m]
SPOS.MC = 1
Reset counter = 1
Rising edge on
CCON.RESET
Start timer:
3 seconds
SCON.FAULT = 0
[m]
SCON.FAULT = 1
Timer
running
[m]
Timer
expired
Reset counter = 3
[m]
Reset counter < 3
Reset counter
increment by 1
4−42
Wait until malfunction reaction is finished.
(Attention: not in parametrising operating mode)
A reset is ignored before this.
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
[m]
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.
[m]
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
[m]
(max. 3 seconds).
CCON.RESET = 0
Reset not possible
[m]
[m]
[o]
Reset successful
[o]
Extended diagnostics are required,
e.g. with FCT.
Festo P.BE−CPX−CMA X−SYS−EN en 0908NH
It is imperative that this action
be executed.
This action is a recommendation.
It does not have to be executed.