Mitsubishi Electric Melsec-QS Series Safety Application Manual page 51

5
SAFETY APPLICATION CONFIGURATION EXAMPLE
(b) Way of using the internal devices
Internal
Designates a timer device.
T0
Times out after a lapse of the time specified at K
Designates a word device.
In the program, this is used as restart status.
(1) D0 = 0 designates that the system is in initial status or start processing is completed.
D0
(2) D0 = 1 (D0.0: ON) designates that the reset switch is pressed.
(3) D0 = 2 (D0.1: ON) designates that the reset switch is released in (2) status and
restart processing is completed.
Designates a word device.
In the program, this is used as start status.
(1) D1 = 0 designates that the system is in initial status or safety is not confirmed.
D1
(2) D1 = 1 (D1.0: ON) designates that the start switch is pressed.
(3) D1= 2 (D1.1: ON) designates that the start switch is released in (2) status and
start processing is completed.
(c) Way of using word device bit specification
(6) Timing chart
Reset SW (X140)
Restart status (D0.0)
Restart status (D0.1)
Start SW (X142)
Start status (D1.0)
Start status (D1.1)
Interlock status (SD1272.0)
Interlock clear (SD1276.0)
CC-Link status (SD1204.0)
Emergency stop SW (X204)
Safety information (M5)
Safety relay output (Y202)
Safety relay output check (X202)
Table5.9 Way of using the internal devices
D . : designates the
Example) D0.0 indicates 0 bits in D0.
F
0 0 0 0 0 0 0 0
Figure5.9 Word device bit specification
Pressing the
emergency
stop SW
Pressing Pressing Pressing
the reset the start the reset
SW SW SW
Turing OFF the emergency SW
Figure5.10 Timing chart
Details
.
th bit data of word device D
0
0 0 0 0 0 0 0 1
CC-Link Pressing the
remote (4) emergency
stop SW
error
Pressing Pressing Pressing Pressing
the start the reset the reset the start
SW SW SW
CC-Link
error
5.6 Case Examples
5.6.1 Emergency stop circuit
.
Detecting
relay welding
Pressing
the reset
SW SW
Detecting welding
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