4. Commissioning
4−22
Festo P.BE−CPX−CMA X−SYS−EN en 0908NH
4.5.4 Execute record (record select mode)
I/O diagram
Requested record no
Output data
Acknowledge star t
SPOS.ACK
Motion complete
SPOS.MC
Actual record no
Input data
N − 1
N N + 1
1
0
1
0
1
0
1
0
Start
CPOS.START
N − 1
N
1
0
1234 567
t
min
t
min:
At least 1 bus cycle waiting time Recommendation: 1 PLC cycle
Not required if consistent data transmission is used
Fig.4/3: Record start sequence
1 Set the desired record number in the PLC’s output data. Until
the start, the CMAX responds with the number of the record
last executed.
2 If SPOS.ACK (Acknowle dge start) = 0, the PLC can intitiate
execution of the record with a rising edge at CPOS.START .
3 The CMAX accepts the record
number and starts positioni ng.
The actual record number is set to the new record in the PLC
input data and SPOS.MC is reset.
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