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1939STB4600 Manual 1
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91 792444 – Fax +353 91 792445
Introduction
SAE-J1939 is a communication protocol developed by SAE (Society of
Automotive Engineers). The communication protocol is based on the CAN
specification developed by Bosch 2.0 part B (September, 1991).
Before using the Model 1939STB the user should be familiar with the
SAE publications listed below, and follow all the guidelines before
attempting to connect to an active J1939 network.
The SAE-J1939 specifications are guidelines. Many manufacturers have
proprietary data codes developed for their own use. The user must obtain
these codes from the manufacturer of the vehicle. B&B Electronics does not
have access to the SAE-J1939 codes, and cannot provide any assistance in
obtaining these codes. It is the responsibility of the user to obtain and
implement the specific J1939 codes for the vehicle(s) that the 1939STB is
interfaced to.
SAE Publications
Surface Vehicle Recommended Practice
SAE-J1939/11 Physical Layer – 250k bits/s, Shielded Twisted Pair
(issued DEC94)
SAE-J1939/21 Data Link Layer (issued JUL94)
SAE-J1939/31 Recommended Practice for Serial Control and
Communications
Vehicle Network – Part 31- Network Layer
(issued DEC94)
SAE-J1939/71 Vehicle Application Layer (revised MAY96)
SAE-J1939/73 Application Layer –Diagnostics (issued FEB96)
SAE-J1939/81 Recommended Practice for Serial Control and
Communications
Vehicle Network – Park 81 – Network Management
(issued JUL97)
You may order these documents from SAE at (412) 776-4970
FAX: (412) 776-0790
Or on the web at
http://www.sae.org
CAN Specification 2.0 Robert Bosch GmbH
Postfach 50
D-7000 Stuttgart 1, Germany