Inverter Status Monitoring, Special Registers for Control

(4)Alarm definition batch clear (D9146)

Writing H9696 to D9146 batch-clears the alarm definitions.

At completion of clear, the write completion signal (X26) turns on, and at the same time, 0 is set to D9150. If any value outside the setting range is written or write is performed during inverter operation, HFFFF is set to D9150 as soon as the write completion signal (X26) turns on, resulting in abnormal completion.

If abnormal completion occurs, the alarm definitions are not cleared.

<Alarm definition batch clear program example>

The following program batch-clears the alarm history.

Alarm definition batch clear request

Normal write

Abnormal write

Turns on alarm definition batch clear request pulse.

Check whether alarm definition batch clear signal turned on to judge whether write was performed normally or not.

Stores H9696 (batch clear code) to D9146 and turns on alarm definition batch clear command. (Until completion signal turns on)

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PLC FUNCTION

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Mitsubishi Electronics FR-A700 Alarm definition batch clear D9146, Alarm definition batch clear program example