Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 103

5
SAFETY APPLICATION CONFIGURATION EXAMPLE (USING A
SINGLE SAFETY PROGRAMMABLE CONTROLLER)
The following shows the constant and internal devices used in the program.
(a) Way of using the constant
(b) Way of using the internal devices
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))
(c) Way of using word device bit specification
K indicates decimal number.
Example) K1 = 1 of decimal number
Table 5.27 Way of using the internal devices
D . indicates the th bit data of word device D
Example) D0.0 = 0 bits in D0
F
0 0 0 0 0 0 0 0
Figure 5.43 Word device bit specification
Description
.
0
0 0 0 0 0 0 0 1
5.6 Case Examples
5.6.5 Door lock circuit
.
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