Mitsubishi Electric MELIPC MI5000 Series User Manual page 110

Momentary power failure detection function
This function detects momentary power failures when the input voltage supplied to the power supply module is below the
prescribed range during operation of this product.
Operation at momentary power failure
The following section shows operation during a momentary power failure.
■When a momentary power failure shorter than the allowable time is detected
• The buffer memory values are retained when a momentary power failure occurs.
• The error information is recorded in the event history after power is restored. (During the initial detection)
• The number of momentary power failures is retained internally. ( Page 108 Check of the number of momentary power
failure detections)
■When a momentary power failure exceeding the allowable momentary power failure time is
detected
This product enters the same state as when the following operations are performed.
• Turning the power OFF and ON or resetting the product (MELIPC MI5000 Series User's Manual (Startup))
• Resetting the product by the MELIPC RESET/WIN RESET switch (MELIPC MI5000 Series User's Manual (Startup))
• Resetting the product by a remote operation of MI Configurator ( Page 104 Remote operation function)
• Resetting the product by the C Controller module dedicated function (CCPU_Reset) (MELIPC MI5000 Series
Programming Manual (VxWorks))
Check of the number of momentary power failure detections
This product retains internally the number of momentary power failure detections.
The number of detected momentary power failures can be checked by the C Controller module dedicated function
(CCPU_GetPowerStatus).
■Function list
Function name
CCPU_GetPowerStatus
For details on the C Controller module dedicated functions, refer to the following manual.
MELIPC MI5000 Series Programming Manual (VxWorks)
8 DIAGNOSTIC AND MAINTENANCE FUNCTIONS
108
8.3 Operating Status Management Function
Description
Acquires the power supply status of a MELIPC.