Manual

023-00354-Rev1.6 evc/epc User Manual 39

evc/epc Controller

With SAE J1939 Interface

SAE J1939 CAN Bus

The evc/epc can be controlled by messages received over the SAE J1939 Bus.

The EEC1 (PGN: 61444 SA: 0) engine RPM (SPN: 190) can be monitored for use in anti-stall and closed loop

operations.

The proprietary SAE J1939 Command Message (PGN: 65281 through 65407 SA: 34) can be monitored for Coil A,

Coil B and RPM Set points for various operation modes. This address is adjusted based on the Module ID. The

relationship of the Module ID and the Command Message address is defined in a chart at the end of this section.

The evc/epc can transmit its status over the SAE J1939 Bus.

The proprietary SAE J1939 Status Message (PGN: 65409 through 65535 SA: 34) is a multiplexed message with

the first data byte indicating message 1 Status or message 2 Analog Values. This address is adjusted based on the

Module ID. The relationship of the Module ID and the Status Message address is defined in a chart at the end of

this section. When the SAE J1939 Command Message is enabled, the Status Message will be transmitted. If

Report Analog Values is enabled on the SAE J1939 tab, the Analog Values will be transmitted. The content of the

Status and Analog Values messages are detailed below.

Command Message Format

Transmission Repetition

40mS

Data Length

Data Page

PDU Format

255

PDU Specific

Module ID #

Priority

N/A

Parameter Group Number

65281 Through 65407

(FF01 Through FF7F)

Start Position

Length

Parameter Name

1 Byte

Always = 1

2-3

2 Bytes

Coil A Set point

4-5

2 Bytes

Coil B Set point

6-7

2 Bytes

RPM Set point