Festo Электромотор MTR-DCI - Manual (Page 159)

5. Commissioning
5-71
Festo P.BE-MTR-DCI-PB-EN en 1209a
Start/stop record
Nominal record
number in output
data
Stop
CCON.B1 (STOP)
Acknowledge start
SPOS.B1 (ACK)
Motion Complete
SPOS.B2 (MC)
Actual record
number in
input data
N - 1 N N + 1
N - 1 N
1
0
1
0
1
0
1
0
1
0
1
2
3
4
6
1
0
1
0
Axis is moving
SPOS.B4 (MOV)
Start
CPOS.B1 (START)
N + 1
5
1
Requirement:
“Acknowledge Start” = 0
2
Rising edge on “Start” causes the new
record number N to be accepted and
“Acknowledge Start” to be set.
3
As soon as “Acknowledge Start” is
detected by the PLC, it can set “Start”
back to 0.
4
The controller reacts with a falling
edge on “Acknowledge Start”.
5
As soon as “Acknowledge start” is
detected by the PLC, it can apply the
next record number.
6
A currently running positioning task
can be stopped with “Stop”.
Fig. 5/7: Flow diagram for “start/stop record”