Instruction Manual

5. Commissioning
5−69
Festo P.BE−GDCP−SFC−LACI−PB−EN en 0812NH
Start/stop record
Setpoint record
number
Output data
Stop
CCON.B1 (STOP)
Acknowledge start
SPOS.B1 (ACK)
Motion Complete
SPOS.B2 (MC)
Actual record
number
Input data
N − 1N 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 at START causes the new
record number N to be accepted and
Acknowledge start" to be set
3 As soon as Acknowledge start" is
recognized by the PLC, START may be
set to 0 again
4 The controller reacts with a falling
edge at Acknowledge start"
5 As soon as Acknowledge start" is
recognized by the PLC, the next record
number may be started
6 A currently running positioning task
can be stopped with STOP
Fig.5/6: Sequence diagram for start/stop record