Valtrack Protocol (resource[] devid JSON)
Valtrack on HTTP 5255: JSON resource array of devid, lat, lon, speed, vbat strings; receive-time stamp.
On Traxelio
What Valtrack trackers do once they are on Traxelio
Point this protocol at Traxelio
Point Valtrack at Traxelio
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1
Capture a Valtrack fingerprint
Confirm an HTTP JSON body whose resource array items carry devid, lat, and lon strings.
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2
Point Valtrack at 5255
Configure only Valtrack to HTTP 5255. Valtrack on 5255 is not V680 on 5016.
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3
Bind each devid
An unknown devid is skipped. Bind that unit key before expecting map points from that item.
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4
Prove one Valtrack fix
POST one resource item with lat and lon strings on 5255 and verify a map point.
Still offline after GPS lock
Valtrack still not landing
- Valtrack aimed at the wrong destination
Valtrack on 5255 is not V680 text on 5016.
- Valtrack POST 200, empty map
An empty resource array, or every devid unknown, stores no points. Bind devid and send lat/lon strings.
- Valtrack point lands at POST time, not device time
Fix time is receive time. The JSON has no timestamp field. A delayed batch will all share arrival time.
FAQ
Valtrack leftover questions
Does Valtrack send Concox 0x7878 frames?
No. Valtrack posts JSON with a resource array. Each item has devid, lat, lon, speed, and vbat as strings.
How does a Valtrack unit present its unit key?
Each resource item has devid. An unknown devid is skipped. Other items in the same array can still plot.
Why does a Valtrack POST return 200 without a map fix?
An empty resource array, or a batch whose every devid is unknown, stores no points.
When is a Valtrack fix time taken?
Receive time on arrival. The JSON has no timestamp field. lat and lon are strings parsed as decimals.
Can a Valtrack unit run SMS setup or a controlled-action flow?
This dialect is positions only. VALTRACK-V4 is the listed device. speed and vbat are extras. There is no SMS family on this row.