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.

Four methods are suggested for calculating mileage:

• GPS: mileage is calculated by GPS coordinates. It means if the change of coordinates was detected, the distance between them is added to mileage.
• Mileage sensor: mileage is calculated by mileage sensor.
• Relative odometer: mileage is calculated by relative odometer sensor.
• GPS + engine ignition sensor: mileage is calculated by GPS coordinates considering ignition state.

Be careful when selecting a method. If you choose to calculate mileage by a sensor, and your unit does not have this sensor, then mileage values will be zero.

Engine Hours Counter

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.

Engine hours counter is widely used in tabular reports.

GPRS Traffic Counter

GPRS traffic counter may be disabled in your package.

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 if pressing the Reset counter button. You will be offered to save the event of reset and the current value in unit events history to be exported to a report later.

You can set the Current value for each counter, and the further calculations will start from the indicated point. In order the new data were added to the current value automatically, activate the Auto option at the right of the counter. You can manually zero counters if entering '0' to the current value field. To enter a fractional number, use dot as delimiter and enter no more than two decimal places.

Counters values 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 unit info tip.