Impulse counter

From Wiki Knowledge Base | Teltonika GPS

FMB devices have pulse counter capability out of the box from firmware 03.28.07.Rev.03 and later.

Use case:

Pulse counter functionality enables the FMB devices to count digital impulses going to DIN1/DIN2. This means that 2 digital inputs of the FMB devices can now be used for precise fuel flow meter data reading. Impulse based fuel usage monitoring is much more accurate than a different type of fuel metering sensors and it makes the FMB devices a perfect solution for high fuel usage machines like cranes, construction vehicles, mining machines, agriculture equipment.

Specification:

Model DIN1 Max frequency, Hz DIN2 Max frequency, Hz Input Voltage threshold (DIN1)Input Voltage threshold (DIN2)

FMB920

2000 - 7.5V -
FMB110

FMB120

FMB122

FMB130

FMB140

FMB202

FMB204

50 2000 7.5V 2.5V



FMB125

FMM125

FMC125

50 - 7.5V -

How does it work?

When pulse counter I/O is enabled, then Pulse Counter DIN1/DIN2 will count every DIN1/DIN2 state change to HIGH and send the counted number with the next record. Pulse counter value is reset after sending the record.

Pulse counter.gif