J1939 250-500 Converter — Instantly
The INPRONIC J1939 250–500 Converter automatically translates communication between both speeds — without modifying PGNs, SPNs, or timing structure
J1939 250 kbps to 500 kbps Bidirectional Converter
This compact and rugged bidirectional converter automatically translates J1939 messages between 250 kbps and 500 kbps in real time, allowing you to connect ECUs, simulators, trainers, and diagnostic tools operating at different baud rates.
Converts J1939 messages from 250 kbps → 500 kbps and from 500 kbps → 250 kbps simultaneously.
Specifications
- Input Voltage: 9–30V
- Speed Conversion: 250 kbps ↔ 500 kbps
- Protocol: SAE J1939
- Connector: Deutsch-style
- Operating Mode: Fully automatic, bidirectional
Pairs well with
In stock! Ships within 1-2 business days.
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J1939 250 kbps to 500 kbps Bidirectional Converter
When integrating mixed-speed J1939 systems, you may experience:
- ECUs failing to identify each other
- Missing RPM, torque, or temperature data
- Transmission modules not receiving required PGNs
- ABS or braking systems losing synchronization
- Dashboards showing no valid readings
- Diagnostic scanners unable to communicate
The INPRONIC Bidirectional Converter:
- ✔ Automatically detects bus speed
- ✔ Validates each incoming J1939 frame
- ✔ Reconstructs the message internally
- ✔ Re-transmits at the opposite speed
- ✔ Preserves 29-bit ID, PGN, SPN, priority, payload, and timing
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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Integrate Mixed-Speed J1939 Networks Without Conflict
Bridge 250 kbps and 500 kbps systems seamlessly — preserve PGNs, SPNs, and full diagnostic communication.
True Bidirectional Translation
Unlike passive adapters, this device:
• Processes traffic from both sides simultaneously
• Guarantees <2 ms latency
• Maintains arbitration ID integrity
• Preserves diagnostic frames (DTCs) without alteration
Your ECUs behave as if they were designed for the same network.
Free shipping in the U.S.
Installation Overview
1️⃣ Connect 250 kbps network to CAN_H_250 / CAN_L_250
2️⃣ Connect 500 kbps network to CAN_H_500 / CAN_L_500
3️⃣ Supply 12V (key-on recommended)
4️⃣ Configure termination if required
The device automatically handles speed detection and translation
⚠ Never connect 250k and 500k CAN wires directly