Mitsubishi Electric MELSEC-QS Series Safety Application Manual page 113

5
SAFETY APPLICATION CONFIGURATION EXAMPLE (USING A
SINGLE SAFETY PROGRAMMABLE CONTROLLER)
Internal device
T0
(6) Timing chart
Mode switched
Mode: Automatic (X123)
Mode: Manual (X122)
Reset switch (X120)
Reset status (M1)
Reset status (M2)
Start switch (X121)
In manual mode, the operation
Start status (M3)
using the enable switch is
possible even though the door is
open.
Start status (M4)
Interlocked status (SD1072.0)
Interlock released status (SD1076.0)
CC-Link status (SD1004.0)
Safety switch (X100)
Enable switch (X10C)
Safety information (M5)
Contactor output (Y101)
Contactor output check (X10A)
The following shows the constant and internal devices used in the program.
(a) Way of using the constant
K indicates decimal number.
Example) K1 = 1 of decimal number
(b) Way of using the internal devices
Table 5.31 Way of using the internal devices
Timer device
Times out after a lapse of the time specified at K
(c) Way of using word device bit specification
D . indicates the
Example) D0.0 = 0 bits in D0
F
0 0 0 0 0 0 0
Figure 5.52 Word device bit specification
In manual mode,
the reset switch and
start switch cannot be used.
When an error occurs on the
safety remote I/O station on
CC-Link Safety, inputs and
outputs of the corresponding
station are turned off.
Door opened
Enable Enable
switch switch
turned off turned on
Figure 5.53 Timing chart
Description
th bit data of word device D
0
0 0 0 0 0 0 0 0 1
Error occurred on
the safety remote I/O station on
CC-Link Safety
5.6 Case Examples
5.6.6 3-position enable switch
.
.
The contact welding is detected when
the contactor output and the contactor
output check signals are both off.
When the contact welding is detected,
the safety output is not turned on.
5
- 64
1
2
3
4
5
6