Festo Контроллер позиционирования CPX-CMAX - Manual (Page 339)

A. Notes on commissioning and service
A−31
Festo P.BE−CPX−CMA X−CONTROL−EN en 0908NH
A.4.2 Start record
SCON.ENABLED = 1
SCON.OPEN = 1
[m]
SCON.ACK = 1
Delay time
1 bus cycle
CPOS.START = 1
CPOS.START = 0
Record carried out
SCON.ACK = 0
[m]
[m]
[m]
[m]
[m]
Operation enabled
CPOS.START = 0
Output data byte 3
= Target record numbe r
[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 that do not support consistent data transmission, it is necessary to wait one bus cycle
after entering the record number during which the record number on the fieldbus is transmitted to the
CMAX.
Recommendation: with most control systems the PLC cycle is longer than the bus cycle −> delay time = 1
PLC cycle
Reset start in order to reduce the delay time next time.
It is only required to wait for MC if reaching the target position is
necessary for the further process.
[m]
[o]
This action is mandatory.
This action is a recommendation. It
does not have to be carried out
[m]
[o]