Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 155

6
SAFETY APPLICATION CONFIGURATION EXAMPLE (USING
SEVERAL SAFETY PROGRAMMABLE CONTROLLERS)
Figure 6.12 Safety FB program for safety programmable controller (3)
For details on the safety FBs, F+ESTOP, and F+EDM, refer to the following.
QSCPU Programming Manual (Safety FB)
6.4.1 Emergency stop circuit (stop of all equipment)
Ladder which releases the interlock when
communication failure or an I/O error occurs
on the safety remote I/O station on
CC-Link Safety.
Ladder which releases the interlock when
an error occurs on CC-Link IE Field Network.
Ladder which converts the Reset input
bit of the safety FB, F+EDM.
Ladder which notifies an emergency stop
request to the safety programmable controller
(1).
Ladder which monitors the status of the
emergency stop switch.
The safety FB is enabled by activating the
reset switch after the programmable controller
is powered on or after the emergency stop
switch is activated and the safety output is
turned off.
Ladder which monitors the contact welding
in the safety relay.
The safety output of the safety FB is turned
on again by activating the start switch after
the enable status is confirmed.
Activate the reset switch to clear an error
occurred in the safety FB.
6.4 Case Example
1
2
3
4
5
6
6
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