Alarm acknowledgement

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Alarms can be acknowledged from EPAM and also from the PLC. When an alarm is acknowledged, the acknowledgement time of the acknowledged alarm or all alarms is set.

Acknowledgement via EPAM

Alarms can be acknowledged from EPAM individually or altogether.

•	Acknowledging all alarms with Button action: Alarm:[<type>].quitall or Alarm:quitall (depending on /S/APP/Alarm:Type)

This sets bit [0].1 in the status data word (alarm acknowledgement via visualization) and sends it to the PLC. Bit [0].1 must then be reset in the PLC.

•	Acknowledging alarms individually with Button action: Alarmlist:quit

If alarms are acknowledged individually, the alarm number is set in status word [1]. The status word [1] in the PLC must then be reset.

Acknowledgement from the PLC

Alarms can likewise be acknowledged individually or altogether from the PLC.

•	Acknowledge all alarms

Setting the status bit [2].0 (alarm acknowledgement via PLC) acknowledges all alarms.

•	Acknowledge alarms individually

Setting the alarm number in the status word [3] causes the individual acknowledgement of the alarm in EPAM. EPAM then resets the status word [3] back to 0. Other alarms can be acknowledged individually afterwards.