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− | '''FMB''' devices have pulse counter capability out of the box from firmware [[FMB firmware errata#03.25.05.Rev.00|03.25.05.Rev.00]] and later. | + | '''FMB''' devices have pulse counter capability out of the box from firmware 03.28.07.Rev.03 and later. |
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| '''Use case:''' | | '''Use case:''' |
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| 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. | | 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. |
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− | '''How does it work?''' | + | '''Specification:''' |
− | | + | <table class="nd-othertables_2" style="width: 30%;"> |
− | 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.[[File:Pulse_counter.gif|center|]]Specification
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− | Maximum supported frequency is 50Hz.
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− | Maximum value 2147483647.
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− | High level:
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− | Input Voltage threshold (DIN1) 7.5V
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− | Input Voltage threshold (DIN2) 2.5V<table class="nd-othertables_2" style="width: 30%;">
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| <tr> | | <tr> |
| <th style="width: 10%; text-align:center; vertical-align:middle;">Model</th> | | <th style="width: 10%; text-align:center; vertical-align:middle;">Model</th> |
− | <th style="width: 10%; text-align:center; vertical-align:middle;">DIN1 | + | <th style="width: 10%; text-align:center; vertical-align:middle;">DIN1 Max frequency, Hz |
− | Max frequency, Hz | |
| </th> | | </th> |
− | <th style="width: 10%; text-align:center; vertical-align:middle;">DIN2 | + | <th style="width: 10%; text-align:center; vertical-align:middle;">DIN2 Max frequency, Hz |
− | Max frequency, Hz | |
| </th><th>Input Voltage threshold (DIN1)</th><th>Input Voltage threshold (DIN2)</th></tr> | | </th><th>Input Voltage threshold (DIN1)</th><th>Input Voltage threshold (DIN2)</th></tr> |
| <tr> | | <tr> |
− | <td style="width: 10%; text-align:center; vertical-align:middle;">[[FMB920]]</td> | + | <td style="width: 10%; text-align:center; vertical-align:middle;"> |
| + | [[FMB920]] |
| + | </td> |
| <td style="width: 10%; text-align:center; vertical-align:middle;">2000</td> | | <td style="width: 10%; text-align:center; vertical-align:middle;">2000</td> |
− | <td style="width: 10%; text-align:center; vertical-align:middle;">-</td><td>7.5V</td><td> -</td></tr>
| + | <td style="width: 10%; text-align:center; vertical-align:middle;">-</td> |
| + | <td style="width: 10%; text-align:center; vertical-align:middle;">7.5V</td> |
| + | <td style="width: 10%; text-align:center; vertical-align:middle;">-</td> |
| <tr> | | <tr> |
| <td style="width: 10%; text-align:center; vertical-align:middle;">[[FMB110]] | | <td style="width: 10%; text-align:center; vertical-align:middle;">[[FMB110]] |
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| </td> | | </td> |
| <td style="width: 10%; text-align:center; vertical-align:middle;">50</td> | | <td style="width: 10%; text-align:center; vertical-align:middle;">50</td> |
− | <td style="width: 10%; text-align:center; vertical-align:middle;">2000</td><td> | + | <td style="width: 10%; text-align:center; vertical-align:middle;">2000</td> |
− | | + | <td style="width: 10%; text-align:center; vertical-align:middle;">7.5V</td> |
− | | + | <td style="width: 10%; text-align:center; vertical-align:middle;">2.5V</td> |
| + | <td> |
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− | 7.5V
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| </td><td> | | </td><td> |
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− |
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− |
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− | 2.5V
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| </td></tr> | | </td></tr> |
| <tr> | | <tr> |
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| </td> | | </td> |
| <td style="width: 10%; text-align:center; vertical-align:middle;">50</td> | | <td style="width: 10%; text-align:center; vertical-align:middle;">50</td> |
− | <td style="width: 10%; text-align:center; vertical-align:middle;">2.5</td><td>7.5V | + | <td style="width: 10%; text-align:center; vertical-align:middle;">-</td> |
− | </td><td></td></tr></table> | + | <td style="width: 10%; text-align:center; vertical-align:middle;">7.5V</td> |
| + | <td style="width: 10%; text-align:center; vertical-align:middle;">-</td> |
| + | <td></td><td></td></tr></table> |
| + | |
| + | '''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.[[File:Pulse_counter.gif|center|]] |