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Power supply
voltage: 85%
Power OFF
detected singal
Program execution
status
CPU reset signal
External power supply
input
Input signal to CP1E
The following diagram shows an example countermeasure for this situation.
• Wiring
Emergency stop input
100 VAC
L1 L2
• Ladder Program
Emergency
stop input
0.00
Emergency
stop output
CP1E CPU Unit Software User's Manual(W480)
Power OFF detection time
AC: 10 ms min.
DC: 2 ms min.
Cyclic task or interrupt task
If the external power supply input turns
OFF before the power interruption is
detected, the CPU Unit will read the
input as being OFF
External power
supply input
COM 0.00 0.01
CP1E
External power supply
input (Enables
emergency stop output.) Emergency
Emergency stop
release input
0.01
Power OFF detected
stop output
Appendices
A-87
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