Counters
Parameters for counters are adjusted on the General tab. Counters are widely used in the system — in online monitoring, as well as in reports. Three types of standard counters are supported: mileage counter, engine hours counter, and GPRS traffic counter.
Mileage Counter
Mileage counter is used to calculate distance in reports.
The mileage counter can be set to one of four methods of calculating:
- GPS — mileage is calculated by GPS coordinates (possible for any unit).
- Relative odometer — mileage is calculated according to the relative odometer sensor which counts the distance traveled since the last message.
- GPS + engine ignition sensor — mileage is calculated by GPS coordinates taking into account the readings of the ignition sensor.
Note that if a sensor (including sensor-validator) needs a parameter from the previous message, such a sensor cannot be used as a method of mileage calculation.
The selected type of calculation technique affects the mileage and duration readings in the reports. If you choose to calculate mileage by a sensor, and your unit does not have it, the mileage values will be zero.
Engine Hours Counter
The engine hours counter calculates engine hours by one of three sensors (engine hours are measured in hours):
- engine ignition sensor,
- absolute engine hours sensor,
- relative engine hours sensor.
Note that if a sensor (including sensor-validator) needs a parameter from the previous message, such a sensor cannot be used as the method of engine hours calculation.
Engine hours counter is widely used in tabular reports.
GPRS Traffic Counter
The GPRS traffic counter is used to calculate Internet traffic consumed by the unit to transmit and receive data. Traffic is measured in kilobytes (KB). At any moment, you can reset this counter manually by pressing the Reset counter button. You will be offered to save the event of reset and the current value in the unit events history to be exported to the report later.
Counter Properties
You can set the Current value for each counter, and further calculations will start from the indicated point. In order to add the new data to the current value automatically, activate the Auto option on the right of the counter. You can manually reset the counters by entering '0' to the current value field.
The values of counters can be altered not only in this dialog but also with the help of appropriate jobs and notifications. Values of mileage and engine hours counters can be shown in the unit tooltip and in the extended unit information.
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