Portman Protocol ($PTMLA / %% / $EXT)
Portman on TCP 5211: $PTMLA, or %% or $EXT, CSV; A/B/C plot, L is void, event 253/254 is ignition.
On Traxelio
What Portman trackers do once they are on Traxelio
Point this protocol at Traxelio
Point Portman at Traxelio
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1
Capture a Portman fingerprint
Confirm a line that opens with $PTMLA, or %% or $EXT, then a unit id and a validity letter.
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2
Point Portman at 5211
Configure only Portman to TCP 5211. Portman on 5211 is not Polte on 5214 or TR20 on 5018.
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3
Do not wait for an ACK
Portman has no reply byte. A parsed CSV line is enough.
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4
Prove one Portman fix
Send one $PTMLA, %% or $EXT, line whose validity is A, B, or C on 5211 and verify a map point.
Still offline after GPS lock
Portman still not landing
- Portman aimed at the wrong port
Portman on 5211 is not Polte ueToken JSON on 5214 or TR20 %% on 5018.
- Session up, empty map
Validity must be A, B, or C. An L letter binds 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
Portman leftover questions
Does Portman send Concox 0x7878 frames?
No. Portman is ASCII CSV that opens with $PTMLA, or %% or $EXT,. Concox families use 0x7878 binary login.
Which validity letters plot a Portman fix?
A, B, and C plot. L is void and will not plot.
What do Portman events 253 and 254 mean?
253 is ignition on. 254 is ignition off. Other event numbers store as the event code only.
Does Portman send an ACK?
No. There is no reply byte. A parsed CSV line is the whole handshake.
Can a Portman unit run SMS setup or a controlled-action flow?
This dialect is positions only. There is no SMS family on this row.