![background image](http://html1.mh-extra.com/html/danfoss/pved-cl/pved-cl_technical-information_4068739005.webp)
Purpose of the document
This document has been created in order to present the communication protocol implemented in PVED-
CL – a controller in the Electro-hydraulic Power Steering system. The document describes the CAN
messages which enables the PVED-CL and relevant sensor to be connected to a J1939 network.
Conventions
•
As suggested in J1939 protocol documentation, the little-endian layout applies to all multi-byte
numerical values, any exception requires an explicit note.
•
Unless otherwise mentioned, all signed numerical values are encoded in two’s complement format.
The CAN Data field byte numbers start from 1.
Reference documents
Refering to literature:
Reference
Title/author
[PVED]
Controller for Electro-Hydraulic Steering PVED, User Manual, 11079550.
[J1939]
SAE J1939 Top Level
[J1939-21]
SAE J1939 Data Link Layer
[J1939-71]
SAE J1939 Application Layer
[J1939-73]
SAE J1939 Diagnostic Layer
[J1939-81]
SAE J1939 Network Management
Definitions and abbreviations
Definitions and abbreviations
Term
Description
DTC
Diagnostic Trouble Code
EHPS
Electro-Hydraulic Power Steering
MMI
Man-Machine Interface
XID
Extended Message Identifier
PVED-CL
Proportional Valve Digital – Closed Loop – here the valve controller
SPN
Suspect Parameter Number
Technical Information
PVED-CL Communication Protocol, version 1.38 Technical Information
Introduction
11079551 • Rev BA • July 2014
5