Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 102

5
SAFETY APPLICATION CONFIGURATION EXAMPLE (USING A
SINGLE SAFETY PROGRAMMABLE CONTROLLER)
(5) Sequence program
5
5.6 Case Examples
- 53
5.6.5 Door lock circuit
The sequence program performs the following processing.
Figure 5.42 Sequence program
Ladder which checks the falling edge
(ON OFF) of the reset switch, accepts
the reset request, and releases the interlock
for the CC-Link Safety.
Ladder which confirms the interlock released
status and cancels the interlock
release request.
Ladder which checks the falling edge
(ON OFF) of the start switch and accepts
the start request.
Ladder which checks the contact welding
in the contactor.
T0 is an off delay timer for the contactor.
Ladder which checks the status of a robot
(whether it is ready to be started or
be back to operation).
Ladder which cancels the start or reset
request when safety cannot be confirmed.
Ladder which processes the stop request.
Ladder which releases the door lock.
Ladder which controls an output
to the contactor.