User's Manual

User Manual VC-EVCC

5.2 Diagnostic CAN

Signal

Description

DiagnosticCAN_Wakeup

The wakeup state of the Diagnostic CAN

DiagnosticCAN_BusOff

The bus off state of the Diagnostic CAN

DiagnosticCAN_WakeupRsn

The wakeup reason of the Diagnostic CAN

DiagnosticCAN_State

The state of the Diagnostic CAN

Table 5-3 Diagnostic CAN Internal Signals

Functionality

CAN channel CAN0 is a diagnostic related CAN supporting the UDS protocol. The baud rate

is set to 500kBaud. The diagnostic CAN channel supports wake-up of the ECU

(DiagnosticCAN_Wakeup) and an AUTOSAR network management is implemented.

5.2.1 UDS communication

UDS over ISO TP diagnostic communication with the following CAN identifiers is

implemented:

 0x610: physical diagnostic request

 0x614: functional diagnostic request

 0x612: diagnostic response

The supported Services and details can be found in the *.cdd file.

Caution

UDS communication must be applied on diagnostic CAN.

5.2.1.1 Overview about ECU Parameters

The following list provides an overview about all configurable ECU parameters and the

respective diagnostic identifiers of the VC-EVCC.

J1939 CAN baud rate

 DID FD 00 – Configuration J1939 CAN baud rate

HSOUT0 Wakeup

 DID FD 03 – Configuration HSOUT0 Wakeup

High Side Output diagnostic mode

 DID FD 25 – Configuration HSOUT diagnostic mode

CAN message cycle times

 DID FD 04 – Configuration PTC0 message

 DID FD 05 – Configuration PTC1 message