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jCOM.J1939.GPS – SAE J1939 GPS Module – Overview

The jCOM.J1939.GPS device connects to an SAE J1939 network and reports the vehicle position (PGN 65267) with a five second frequency, according to the SAE J1939-71 Standard. The integrated J1939 protocol stack automatically negotiates a node address in the range of 128 to 247. The GPS data is broadcast by using the global destination address (255 = 0xFF). The device’s firmware can be updated on-site per the integrated RS232 port, which also allows the loading of customer-specific features.

The content of delivery includes the jCOM.J1939.GPS module, the GPS antenna (preferred installation location is the driver cabin, i.e. close to the wind shield), and the SAE J1939 cable suited for a 9-pin Deutsch connection.

New! Starting with firmware version 2.0, the  jCOM.J1939.GPS device responds to requests for Time & Date (PGN 65254)  Vehicle Direction & Speed (PGN 65256).

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  • ARM Cortex-M3 Processor
  • CAN Bus Interface – Fully ISO-11898 Compliant
  • RS232 Interface For On-Site Firmware Upload and/or Gateway Functionality
  • GPS module with external antenna
  • SAE J1939 Protocol Stack
  • Extended Temperature Range of -40C to +85C
  • Input Power Range of 7 VDC to 36 VDC
  • Flame Retardant ABS Enclosure 4.25 x 3.00 x 1.38 in / 107.95 x 76.20 x 35.05 mm
  • Environmentally friendly, RoHS compliant


  • CAN Interface
    • CAN Controller integrated in microcontroller
    • Fully ISO 11898-compliant
    • Supports CAN 2.0A And CAN 2.0B
    • Bit rate detection 250/500 kBaud
  • GPS
    • Receiver type: 56 channels, GPS L1(1575.42Mhz) C/A code, SBAS:WAAS/EGNOS/MSAS
    • Horizontal position accuracy: 2.5mCEP
    • Navigation update rate:5 Hz maximum (1HZ default)
    • Capture time: Cold start: 27s (fastest);Hot start: 1s
  • SAE J1939 Protocol Stack
    • Fully compliant to SAE J1939/21, SAE J1939/81 and SAE J1939/16
    • Sending and receiving of messages (PGNs)
    • Message filtering
    • Request message processing
    • BAM and CM transport protocol (TP) processing
    • Static and arbitrary address claim
    • Automatic CAN baud rate detection (250/500 kbit/sec)
© 2018 Copperhill Technologies Corporation