Having issues with the GPS GV 57

John2 days ago

I am using traccar 6.6 ubuntu version and have turnt of ignition and odometer in the GPS software.
I am experiencing issues with this GPS GV57MGV2, while attempting to connect it to the Traccar platform.

In the Traccar logs, the GPS device appears to be returning an empty string.

2025-01-17 12:53:11  INFO: [Tcfcfde09] connected
2025-01-17 12:53:12  INFO: [Tcfcfde09: gl200 < 88.**.**.140] +ACK:GTHBD,840502,867963063196555,GV57MGV2,20250117125312,5CA5$
2025-01-17 12:53:12  INFO: Event id: 86796306319****, time: 2025-01-17 12:53:12, type: deviceOnline, notifications: 0
2025-01-17 12:53:12  INFO: [Tcfcfde09: gl200 > 88.**.**.140] +SACK:GTHBD,840502,5CA5$
2025-01-17 12:53:12  INFO: [Tcfcfde09: gl200 < 88.**.**.140] +BUFF:GTIGF,840502,86796306319****,,0,0,,,,,,,0268,0006,22C4,13E5,00,,,20250116170541,22D0$
2025-01-17 12:53:12  WARN: [Tcfcfde09] error - empty String - NumberFormatException (... < Gl200TextProtocolDecoder:1049 < *:1660 < Gl200ProtocolDecoder:54 < ExtendedObjectDecoder:73 < ... < WrapperContext:102 < ...)
2025-01-17 12:53:12  INFO: [Tcfcfde09] disconnected

I have configured the GPS to communicate using the GL200 protocol on Traccar, but the connection does not seem to work as expected. I would appreciate your assistance in resolving this issue.

Anton Tananaev2 days ago

Looks like we don't expect some fields to be empty. Do you have the protocol documentation for your device?

John2 days ago

I don't have the official documentation for the protocol, but I have seen claims on some websites that it uses the @Track Air Interface Protocol.

Reference: https://manuals.plus/queclink/gv57mg-cat-nb2-gnss-tracker-manual

We are currently waiting for a meeting with the company to clarify how to fix the issue, but the process is taking a long time.