Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 74

5
SAFETY APPLICATION CONFIGURATION EXAMPLE (USING A
SINGLE SAFETY PROGRAMMABLE CONTROLLER)
Internal device
Timer device
T0
Times out after a lapse of the time specified at K
Word device
Used as restart status in this program.
D0 (1) D0 = 0: Initial status or start processing completed
(2) D0 = 1 (D0.0: on): Reset switch activated
(3) D0 = 2 (D0.1: on): Restart processing completed (Reset switch released after activated in (2))
Word device
Used as start status in this program.
D1 (1) D1 = 0: Initial status or safety not confirmed
(2) D1 = 1 (D1.0: on): Start switch activated
(3) D1 = 2 (D1.1: on): Start processing completed (Start switch released after activated in (2))
(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)
Stop SW (X144)
Safety door SW (X100)
Safety information (M5)
Safety relay output
(Y202)
Safety relay output check
(X202)
5
5.6 Case Examples
- 25
5.6.2 Door monitor circuit
(b) Way of using the internal devices
Table 5.14 Way of using the internal devices
(c) Way of using word device bit specification
D . indicates the
Example) D0.0 = 0 bits in D0
F
0 0 0 0 0
Figure 5.19 Word device bit specification
Pressing the
stop SW
Pressing Pressing Pressing
the reset the start the reset
SW SW SW
Turing OFF
the stop SW
Figure 5.20 Timing chart
Description
.
th bit data of word device D
0 0 0 0 0 0 0 0 0 0
Opening Closing
remote (4)
the door the door
Pressing Pressing Pressing
the start the reset the start
SW SW SW
CC-Link
error
.
0
1
CC
Pressing the
stop SW
error
Pressing Pressing Pressing
the reset the reset the start
SW SW SW
Detecting welding
Detecting
relay
welding
Pressing
the reset
SW