Description / Abstract:
The SAE J1939 documents are intended for light, medium, and
heavy-duty vehicles used on or off road as well as appropriate
stationary applications which use vehicle derived components (e.g.
generator sets). Vehicles of interest include, but are not limited
to, on- and off-highway trucks and their trailers, construction
equipment, and agricultural equipment and implements.
The purpose of these documents is to provide an open
interconnect system for electronic systems. It is the intention of
these documents to allow Electronic Control Units to communicate
with each other by providing a standard architecture.
This particular document, SAE J1939-74, describes the message
structure for a set of messages which enable the user to determine
and announce to others on the network, the parameter placement
within a particular message from the special set of messages
defined within this document.
Rationale
SAE J1939-74 has been reaffirmed to comply with the SAE 5-Year
Review policy.