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

4. Commissioning

4.6.2 Start record

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