Suntech SA200 semicolon SMS
Guided setup available
Request status
SA200CMD;XXXXXX;02;StatusReqAPN commands depend on the carrier SIM in your tracker, so they are not shown here.
22 devices
3 brands
Suntech Protocol (ST300 / ST310 / ST340 / ST600 family)
ASCII TCP/UDP protocol designed by Suntech (Brazil) for the ST300, ST310U, ST340, ST380, ST600, and ST910 fleet/lone-worker tracker families. Dominant across LATAM rental, fleet, and cargo-tracking deployments.
On Traxelio
What Suntech trackers do once they are on Traxelio
Geo-Zones
Get alerted when vehicles cross boundaries
Driving Behaviors
PremiumDriver scoring software to reduce accidents and insurance costs
Predictive Maintenance
PremiumAutomated maintenance scheduling that prevents breakdowns
Trip History
Every trip recorded, every dispute settled
Immobilizer request for compatible installations
Immobilizer requests for compatible installations
Hardware that speaks this protocol
Devices that speak Suntech
Point this protocol at Traxelio
Point Suntech at Traxelio
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1
Insert SIM with data plan + airtime
Verify the SIM has an active LTE/3G data session in a phone first. Suntech devices have no UI to surface SIM / APN failures · a dead SIM looks identical to a working one to the device's status LEDs.
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2
Connect over USB or SMS for first config
ST310U and newer revisions accept USB config via SunSuite (Windows / Wine). Older ST300 / ST340 are SMS-only. Either path works · the SMS commands ride on the same parameter store.
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3
Point the device at your server
Send the
Networkcommand with your server's hostname and port. Replaceyour-server.com:5039with whatever endpoint your platform exposes for the Suntech ASCII protocol.ST300CMD;<device_serial>;02;Network;your-server.com;5039; ST300CMD;<device_serial>;02;APN;internet;; -
4
Set reporting cadence
ST300CMD;<serial>;02;Report;30;60;0;reports every 30 s moving, 60 s stationary, 0 = position-only. Tighten for fleet ops (10 s / 30 s); loosen for battery-saver lone-worker (300 s / 600 s). -
5
Confirm first position arrives
Send
ST300CMD;<serial>;01;Status;and watch your server log. After a clean boot with GPS lock, confirm the first decoded position in Traxelio. No response after the reboot · re-check APN (most common silent failure).
gps.traxelio.com:5011
TCP
What Traxelio surfaces from these packets
Suntech fields Traxelio reads
- GPS Location
- Speed
- Altitude
- Heading / Direction
- Street Address
- GPS Accuracy
- Ignition Status
- Odometer / Mileage
- Engine Hours
- Battery Level
Still offline after GPS lock
Suntech still not landing
- Device sends position once, then stops · server keeps the TCP socket open but no further data arrives
Almost always a NAT / firewall keepalive issue on the carrier side. Suntech keeps the TCP socket open between reports; some LATAM carriers tear the NAT entry after 5-10 min of silence. Fix: enable the device's keep-alive (
ST300CMD;<serial>;02;Keepalive;180;for a 3-min ping) or accept reconnects on every report by setting Report interval below the carrier's NAT timeout.- ST310U powers off when the engine is off · positions lost
ST310U draws power from the OBD port, which most vehicles cut when ignition is off. The internal backup battery is small (typically 30-60 min). Either accept the gap (most fleet use cases don't care about parked-vehicle positions) or wire the device to switched-and-constant power via the OBD harness · Suntech sells the cable.
- Panic-button alerts from ST910 don't arrive · status reports work fine
Panic events ride on a separate
ST910EMG;(emergency) packet shape with higher priority. If your decoder only handlesSTTandEVT, panic alerts silently drop. AddEMG,ALR, andALTto your message-type whitelist · all standard Suntech messages, but each has its own decoder branch.
FAQ
Suntech leftover questions
Is the Suntech protocol open / publicly documented?
It is documented but distributed under integrator NDA · Suntech sends the PDF on request via their partner portal. The open-source Traccar project ships a complete SuntechProtocolDecoder covering all known message types, which is the most accessible reference for a working implementation.