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Granit GPS Tracker Series: Technical Port 5112 Integration
The Granit protocol is a specialized communication standard primarily used via Port 5112 for telematics data. Whether you are using the compact C-100 or the rugged WP-30C, correct hardware wiring and software configuration are vital for real-time tracking accuracy.
1. Device Specifications Comparison
| Model | Device Class | Environment Rating | Specialization |
|---|---|---|---|
| C-100 | Compact/Hidden | Standard Indoor | Asset recovery & private vehicles |
| G-100 | Fleet Management | Standard Housing | Multi-purpose fleet logistics |
| L-100 | Logistics/Cargo | Standard Housing | High-capacity data logging for long hauls |
| O-300 | Industrial/OBD | Enhanced Protection | Heavy machinery & CAN-bus telematics |
| WP-30C | Extreme Duty | IP67 Waterproof | Construction, marine, and open environments |
2. Technical Wiring Diagram (Common Granit Interface)
POWER (+) [RED] ———————> 12V / 24V Constant DC Source
GROUND (-) [BLACK] ———————> Vehicle Chassis / Ground
IGNITION [WHITE] ———————> ACC / Ignition Switch (ON/OFF Sense)
FUEL CUT [YELLOW] ———————> Relay (Terminals 85/86 for Immobilization)
DIGITAL IN [GREEN] ———————> SOS Button / Sensor Input
ANALOG IN [BLUE] ———————> Fuel Level Sensor / Temperature Probe
GROUND (-) [BLACK] ———————> Vehicle Chassis / Ground
IGNITION [WHITE] ———————> ACC / Ignition Switch (ON/OFF Sense)
FUEL CUT [YELLOW] ———————> Relay (Terminals 85/86 for Immobilization)
DIGITAL IN [GREEN] ———————> SOS Button / Sensor Input
ANALOG IN [BLUE] ———————> Fuel Level Sensor / Temperature Probe
3. SMS Configuration Commands (Port 5112)
Standard password is 123456. Send these to the device SIM number.
# Initialize the device
begin123456
begin123456
# Set Server Address and Port 5112
adminip123456 123.123.123.123 5112
# Configure APN (Example: T-Mobile)
apn123456 ://t-mobile.com
# Set Reporting Frequency (Moving: 30s | Still: 10m)
fix030s010m***n123456
# Check Device Status
check123456
4. Troubleshooting: Fix “Offline” Status
- Check SIM Credit/Data: Ensure the M2M SIM has an active data plan. Many “offline” issues are simply expired balance.
- Validate GPRS Status: Send
GPRS123456to ensure the internet connection is active. - Check Signal Strength: Use the
check123456command. If the signal is below 15, relocate the antenna away from metal obstructions. - Verify Port Openings: Ensure your server firewall has TCP/UDP Port 5112 open. Use a tool like Packet Sender to verify communication.
- LED Diagnostics:
- Flashing Green: Searching for GSM signal.
- Steady Green: Logged into GPRS network.
- Flashing Blue: Searching for GPS satellites (Move outdoors).
- Hard Reset: If the unit is frozen, send
reset123456or cycle the power physically.
Pro Tip: For WP-30C models used in marine or heavy rain environments, ensure the wiring harness entry point is facing downward to prevent water ingress via capillary action along the cables.
