Positrex Protocol (UDP 0x2E ping)
Positrex on UDP 5252: binary service 0x2E, packed time, lat bit 23 valid, lat/lon divided by 40000.
On Traxelio
What Positrex trackers do once they are on Traxelio
Hardware that speaks this protocol
Devices that speak Positrex
Point this protocol at Traxelio
Point Positrex at Traxelio
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1
Capture a Positrex fingerprint
Confirm a UDP binary datagram whose service byte is 0x2E after the packed unit id.
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2
Point Positrex at 5252
Configure only Positrex to UDP 5252. Positrex on 5252 is not GPSMTA on 5038 or ThinkPower on 5228.
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3
Do not wait for an ACK
Positrex has no reply byte. A parsed 0x2E ping is enough.
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4
Prove one Positrex fix
Send one 0x2E ping whose latitude bit 23 is set on 5252 and verify a map point.
Still offline after GPS lock
Positrex still not landing
- Positrex aimed as TCP
This dialect is UDP on 5252. A TCP session will not plot.
- Datagram up, empty map
Only service 0x2E plots. Other services bind the id and will not plot.
- No ACK, assumed dead
This dialect has no reply byte. Check the map, not the socket for an ACK.
FAQ
Positrex leftover questions
Does Positrex send Concox 0x7878 frames?
No. Positrex is a packed binary ping whose service byte is 0x2E. Concox families use 0x7878 binary login.
Which service byte plots a Positrex fix?
0x2E. Any other service binds the unit and will not plot.
How are Positrex coordinates scaled?
Latitude and longitude are divided by 40000. Bit 23 of the latitude field is the valid bit.
Does Positrex send an ACK?
No. There is no reply byte. A parsed 0x2E ping is the whole handshake.
Can a Positrex unit run SMS setup or a controlled-action flow?
This dialect is positions only. There is no SMS family on this row.