01/2018
65 / 80
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Issue no: 09
CVIL II
12 - CYCLE FLOW CHART AND TIMING
CHART
12.1 - Cycle flow chart
Start
End
No
No
No
Yes
Ready = 1
External reset
Accept report &
Reject report = 0
No
Start cycle in
cycle = 1
Reset = 1
Select cycle number
No
Cycle end in
cycle = 0
Start cycle = 1
Read (optional)
"cycle ackno"
Read results
OK / NOK
Read (if necessary)
digital result
Start cycle = 0
Spindle validation = 1
(if necessary)
12.2 - Cycle timing chart
Phase
1
2
3
4
5
Ready
Cycle 1
Cycle 2
Cycle 4
Cycle acknowl. 1
Cycle acknowl. 2
Cycle acknowl. 4
Spindle validation
Cycle start
In cycle
Accept / Reject report
Reset
Phase Designation
1
The Reset signal is sent by the PLC =>
resets the report (this PLC command is not
compulsory).
2
The controller receives cycle n°1 => cycle
acknowledgement n°1 is validated (if the
cycle is programmed).
3
The controller receives the "Start cycle" =>
validates the "in cycle" signal.
4
At the end of the cycle, the controller
validates an "accept" or "reject" report which
is sent to the PLC.
5
The "in cycle" signal returns to zero when all
the operations of the system are over.
To optimise cycle time, the PLC or digital
control can be synchronised with the
"accept report" or "reject report" signal, but
the tightening system is ready to receive
new commands (reset, etc.) only once the
"in cycle" signal has been reset.