Backlight Shutoff Detection And External Alarm - Mitsubishi Electric GT16 User Manual

18.5.1 Backlight shutoff detection and external alarm

When the GOT detects a backlight shutoff, the system information set with drawing software is turned on.
You can issue a backlight shutoff of the GOT from the PLC to external devices (such as the lamp or buzzer), using
system information.
To avoid any screen touch operation by the user who misunderstands it is in screen saving mode, install an
external alarm and interlock the loads that would cause danger.
For details of the system information, refer to the following.
HINT HINT HINT
Example of alarm output to external devices (such as lamp or buzzer)
The following provides an example of outputting the backlight shutoff detection signal from a FX Series PLC to an
external device, using system information.
Condition: The Written Device is "D20" and all data is used (the button is clicked on the setting screen of drawing
software) for the system information assignment.
D36 b14: Backlight shutoff detection (System Signal 2-2)
Turned on upon a backlight shutoff.
Used as shown below in the sequence program.
RUN monitor
M8000
Backlight shutoff detection
M34
POINT POINT POINT
Precautions for the backlight shutoff status
In the backlight shutoff status, the touch key operates.
Early replacement of backlight is recommended.
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18. MAINTENANCE AND INSPECTION
18.5 Backlight Shutoff Detection
GT Designer3 Version1 Screen Design Manual (Fundamentals)
MOV D36 K4M20
Y***
"*" indicates the output number at which the external device is connected.
Output to external device of PLC
Activated the output upon battery
shutoff detection.