SAE J 1939/15

December 2018

Standard Current

Physical Layer, 250 Kbps, Un-Shielded Twisted Pair (UTP)

This document describes a physical layer utilizing Unshielded Twisted Pair (UTP) cable with extended stub lengths for flexibility in ECU placement and network topology. Also, connectors are not specified.CAN controllers used on SAE J1939-15 networks must be restricted to use only Classical Frames as defined in ISO 11898- 1. A network which may have legacy controllers cannot tolerate FD Frames.These SAE Recommended Practices are intended for light- and heavy-duty vehicles 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.Document is revised to allow unjacketed cable for some installations, clarify minimum node and stub spacing, update ISO references and terminology, and correct table references to SAE J1939-11.

Main informations

Collections

SAE american standards

Publication date

December 2018

Number of pages

20 p.

Reference

SAE J 1939/15

Classification index

J1939/15_201812

International kinship

ISO11898

Sumary

Physical Layer, 250 Kbps, Un-Shielded Twisted Pair (UTP)

This document describes a physical layer utilizing Unshielded Twisted Pair (UTP) cable with extended stub lengths for flexibility in ECU placement and network topology. Also, connectors are not specified. CAN controllers used on SAE J1939-15 networks must be restricted to use only Classical Frames as defined in ISO 11898- 1. A network which may have legacy controllers cannot tolerate FD Frames. These SAE Recommended Practices are intended for light- and heavy-duty vehicles 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. Document is revised to allow unjacketed cable for some installations, clarify minimum node and stub spacing, update ISO references and terminology, and correct table references to SAE J1939-11.

Replaced standards (1)

SAE J 1939/15

August 2015

Standard Cancelled

Physical Layer, 250 Kbps, Un-Shielded Twisted Pair (UTP)

This document describes a physical layer utilizing Unshielded Twisted Pair (UTP) cable with extended stub lengths for flexibility in ECU placement and network topology. Also, connectors are not specified. CAN controllers are now available which support the newly introduced CAN Flexible Data Rate Frame format (known as “CAN FD”). These controllers, when used on SAE J1939-15 networks, must be restricted to use only the Classical Frame format compliant to ISO 11898-1 (2003). These SAE Recommended Practices are intended for light- and heavy-duty vehicles 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.

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