Thank you very much for contacting us.
With IO Send Mode as “Send Last Known Value” in IO Global settings, the device sends the current value from the tachograph, or the last known value if there is no new value from the tachograph e.g. when the tachograph goes into sleep mode.
Please update the device to the latest firmware, Ref.: FMB640 firmware errata, and send the “cpureset” and “sdformat” SMS commands to the device.
If the issue persists – please contact your sales manager so we can better analyze the issue and provide a solution.
If you do not have any connection with our sales managers, please contact us via our official website:
- Go to https://teltonika-gps.com/,
- click the "CONTACT US" button at the bottom right of the page,
- fill the online form
- and submit it.
Please select "Telematics" as the topic.
Alternatively, you can send an e-mail with a detailed description of your situation to firstname.lastname@example.org.
When contacting us, please follow these recommendations: https://wiki.teltonika-gps.com/view/Recommendations_for_filling_a_query_description