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Acknowledge - method of object PmaAlarmGroup

Description:
Alarm item acknowledgement (acknowledgement of the PmAlarmItem object).
Syntax:
Empty Acknowledge(String sId, [String sUserNote], [Date tTimeAck], [String sExtra])
Calling:
oAl.Acknowledge sId, sUserNote, tTimeAck
Parameters:
sId(String) The unique text identifier of the alarm item. See "Identifier" configurator.

For the multiple acknowledgement of all alarm items, the text "$all" can be set.

Note! For the multiple acknowledgement of all alarm items that are in compliance with filtering criteria, can be entered the "$all" text followed by filtration string.. For example$all;area:boiler1;

sUserNote[optional] (String) The text note that is stored to the data together with the acknowledged alarm item (it is enabled on the "Storage" page).
tTimeAck[optional] (Date) The acknowledge time of the alarm. If not set, then the computer current time is used.
sExtra[optional] (String) Additional parameters parameters.

Entries are in KeyVal format, for example "ackerid:operator1;lang:en;".

"ackerid:xx;" - Identifier of user that acknowledged the alarm. This identifier is set into the AckerId property of the corresponding alarm and will also be written to disk into the AckerId column (if this column is enabled for writing to disk). If the parameter is not entered, then the identifier of user that acknowledged the alarm is used (local user or network user). For example"ackerid:operator1;".
"lang:xx;" - Specifies national language for Macro expression $.text. Language is determined with a text identifier, e.g. "en", "de", "ru" etc. - see Fully supported languages in the PROMOTIC system. If not set, then the present language of running application is used instead. This is relevant for multiple acknowledgement with filtration string switched on (e.g. $all;area:boiler1;), where it is possible to set the language for evaluation of localized fields. For example"lang:en;".
Note:
The acknowledgement succeeds only if the "Acknowledge" permission is fullfiled.

Calling the Acknowledge method over the acknowledged alarm has no effect. An unacknowledged alarm is acknowledged. The behaviour of the alarm during the acknowledgement is specified by the "Acknowledge type" configurator. The acknowledgement of the alarm is usually done interactively by the user from the viewer of an alarm group.

If there are several instances of the alarm item with the same identifier (caused by alarm item states inactive unacknowledged (blue)), then the last, the latest old alarm item is acknowledged. Older alarm items can be acknowledged by the PmAlarmItem.Acknowledge method over the reference to the corresponding alarm item obtained by the Item method with using the auxiliary parameter tTimeOn.

After the attempt to acknowledge non-existing alarm item (wrong parameter sId), an error occurs in the INFO system only if in the corresponding PmaAlarmGroup object there is no alarm item with the set configurator Template for dynamically created items (i.e. all alarm items of the PmaAlarmGroup object are statically configured).

For the multiple acknowledgement of all alarm items, the text "$all" can be set in the sId parameter, or followed by filtration string.

The method is synchronous, i.e. it is processed immediately by the alarm subsystem. Nevertheless writing the history to disk is asynchronous, it means that this method passes the request for writing to the history to the alarm subsystem, it is placed into the queue of requests and it is processed later by the alarm subsystem.

Example1:
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oAl.Acknowledge("T1_HI");
Example2:
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oAl.Acknowledge("$all");
Example3:
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oAl.Acknowledge("$all;area:boiler1;source:#begin:temperature;");
PROMOTIC 9.0.7 SCADA system documentation - MICROSYS, spol. s r.o.

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