Promotic

MinH - property of the ExtAlarmAnalog object

Description:
Hysteresis value of the lower limits 1 and 2.
Syntax:
Double MinH
Note:
Property access for read and write. The preset value of this property is defined in the "Hysteresis for lower limits" configurator of this object.
 
The hysteresis prevents repeated triggering of alarm if the value oscilates around the corresponding limit.There are exactly defined limit values of corresponding Min1 and Min2 that trigger the alarm.
The alarm is stopped once the measured value go below the limits Min1 or Min2 by the value of defined hysteresis.
It means the limits for alarms to start are Min2 and Min1, and for alarms to stop are Min1+MinH and Min2+MinH.
See also:
Example1:
Examples of obtaining this property in the script.
JavaScriptVBScriptSelect and copy to clipboard

value = pMe.Pm("/data/#vars/Temperature/#ext/al").MinH;

// or
value = pMe.Pm("/data/#vars/Temperature").Extension("al").MinH;

// or
value = pMe.Pm("/data").Item("Temperature").Extension("al").MinH;
Example2:
The example of obtaining this property by Macro expression from another data extension via pVar variable.

History:
Pm9.00.15: Created
PROMOTIC 9.0.17 SCADA system documentation - MICROSYS, spol. s r.o.

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