Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 65

5
SAFETY APPLICATION CONFIGURATION EXAMPLE (USING A
SINGLE SAFETY PROGRAMMABLE CONTROLLER)
(7) Program using safety FB
FB name
F+EDM
F+ESTOP
For details on the safety FBs, F+ESTOP, and F+EDM, refer to the following.
Table 5.10 Safety FBs to be used
Function
This FB monitors safety equipment such as
External device
an actuator and a contactor and controls a
monitor
safety output.
This FB is a safety-related FB for monitoring
an emergency stop button. This FB can be
Emergency stop
used for emergency switch off functionality
(stop category 0).
Figure 5.12 Program using safety FB
QSCPU Programming Manual (Safety FB)
Description
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 converts the Reset input
bit of the safety FB, F+EDM.
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.
5.6 Case Examples
5.6.1 Emergency stop circuit
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