Mitsubishi Electric GT14 User Manual page 357

HINT HINT HINT
Example of alarm output to external device (lamp, buzzer, etc.)
The following describes an example of outputting the battery voltage low signal from a FX series PLC to an
external device with system information.
Condition: The Write 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 b12: Battery voltage low (System Signal 2-2)
Turned on upon a battery voltage drop.
Used as shown below in the sequence program.
For details of system information, refer to the following.
GT Designer3 Version1 Screen Design Manual (Fundamentals)
RUN monitor
M8000
MOV D36 K4M20
Battery voltage low
M32
Y***
"*" indicates the output number at which the external device is connected.
19. MAINTENANCE AND INSPECTION
19.4 Battery Voltage Low Detection and Battery Replacement
Output to external device of PLC
Activated the output upon battery
voltage low detection.
17
18
19
20
21
22
23
24
19 - 5