Processing At Power Interruptions - Omron CJ2 CPU UNIT SOFTWARE User Manual

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Processing at Power Interruptions

If power is interrupted and the interruption is confirmed while the CPU Unit is operating, the instruction
currently being executed will be completed and the following power interruption processing will be per-
formed.
Processing at power interruption will be performed according to the settings for power OFF interruption
*1
tasks.
• If the power OFF interrupt task has been enabled, the task will be executed and then the CPU Unit
will be reset immediately.
• If the power OFF interrupt task has not been enabled, the CPU Unit will be reset
*1 The power OFF interrupt task is executed immediately before the CPU Unit is reset due to power interruption.
*2 It is possible to perform power interruption processing after a specified range of instructions is executed when
the power is interrupted during operation.
Operation will always continue for momentary power failures of less than 10 ms for an AC power supply
and less than 2 ms for a DC power supply. It is possible to lengthen the time from which a power inter-
ruption is detected until it is confirmed as a power interruption when the power supply conditions are
poor.
For information on processing at power interruption, refer to A-5 Operation for Power Interruptions.
CJ2 CPU Unit Software User's Manual
3 CPU Unit Operation
*2
immediately.
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