Counter Tags
Counter tags provide a means to count events such as pump starts or equipment cycles. A count is recorded each time the source changes from 0 to non-zero.
Note: an invalid value for the source is not assumed to mean a 0 or off state. A transition from invalid to 1 will not be counted.
The counter tag retains its value between application restarts and uses the last known valid source value when counting. For example, if the data source was 1 (i.e. running) when VTS stopped and is 1 when VTS restarts, it is assumed that the equipment continued to run while VTS was offline and the counter is not incremented. Similarly, if the source was 0 (i.e. off) when VTS stopped and is 1 when VTS restarts, it is assumed that the equipment started at least once while VTS was offline and the counter is incremented by 1.
Note: Never attempt to attach a Logger Tag to a Counter tag. Counter tags have a built in logger.
Also: Note that right-clicking on a counter tag will not cause the Historical Data Viewer window to open.
Counter Tag Type Characteristics
Tag Browser Name: Counter
Database Table Name: CounterTag
Type: Data Logging and Reporting Tags, Calculation
Tag Group Memberships: Analogs, Numeric, Trenders
Log Enabled Variables: Value
Native Drawing Methods: Reset Button, Reset Target, Last Logged Value, Numeric Value, and a sub-set of the Analog Input drawing methods.
Counter Tag Type Properties: ID Tab
Counter Tag Type Properties: Settings
Tab