Rockwell-automation MMCL Using the Mining, Mineral, and Cement Library Manual de usuario Pagina 48

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Publication RA-UM001B-EN-P - November 2010
48 Developing an HMI Application
Analog Alarm
The standard configuration uses four thresholds, defined as follows.
An alarm is not clearable until the device in alarm is back in a normal state.
The analog alarm value H123\H456\H78\Val\PVA stays at the alarm level,
until it has been acknowledged by the operator with the display acknowledge
button
. An analog alarm counts as 1 alarm, even if two messages are visible in
the alarm list (for example, High-alarm and Max-alarm).
Threshold
Severity Alarm Label Direction
H123\H456\H78\Set\NV 1 H123-H456.H78:NA Decreasing
H123\H456\H78\Set\LV 2 H123-H456.H78:LA Decreasing
H123\H456\H78\Set\HV 2 H123-H456.H78:HA Increasing
H123\H456\H78\Set\MV 1 H123-H456.H78:MA Increasing
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