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

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4. Commissioning
4−41
Festo P.BE−CPX−CMA X−SYS−EN en 0908NH
4.6.2 Start record
SCON.ENABLED = 1
SCON.OPE N = 1
[m]
SCON.ACK = 1
Wait time
1 bus cycle
CPOS.START = 1
CPOS.START = 0
Record executed
SCON.ACK = 0
[m]
[m]
[m]
[m]
[m]
Enable operation
CPOS.START = 0
Output data byte 3
= Target record number
[o]
SCON.ACK = 1
SCON.ACK = 0
SCON.ACK = 0
SCON.ACK = 1
SCON.MC = 0
SCON.MC = 1
Preparing the starting edge
Starting edge
For all fieldbuses which do not support consistent data transmission, after entering the
record number, one bus cycle must be waited, during which the record number is
transferred to the CMAX on the fieldbus.
Recommendation: On most controls, the PLC cycle is longer than the bus cycle.
> Wait time = 1 PLC cycle
Reset start to reduce the wait time for the next time.
MC must only be waited for when the target position
must be reached for the further sequence.
[m]
[o]
It is imperative that this action
be executed.
This action is a recommendation.
It does not have to be executed.
[m]
[o]