CAN

CAN/CAN-FD is an industry-standard vehicle bus protocol designed for reliable ECU communication in automotive applications.

IMPORTANT

Some features described in this section may require a CAN DBC file. For more information about DBC files, please refer to our database documentation.

Supported Hardware:

Manufacturer	Protocols
PEAK	CAN, CAN-FD
KVASER	CAN, CAN-FD
ZLG	CAN, CAN-FD
Toomoss	CAN, CAN-FD
VECTOR	CAN, CAN-FD
SLCAN	CAN, CAN-FD

SLCAN Special

SLCAN is a low-cost open-source solution, with firmware sourced from canable-fw, and communication based on USB-ACM.

NOTE

This firmware currently does not provide any ACK/NACK feedback for serial commands.

GS_USB

Windows/Linux/Mac CAN driver based on usbfs or WinUSB WCID for Geschwister Schneider USB/CAN devices and candleLight USB CAN interfaces.

Linux gs_usb

Linux kernels 3.7 and above have merged the gs_usb driver. Check if the gs_usb module is enabled using

lsmod | grep gs_usb

If it's not loaded, use

sudo modprobe gs_usb

To remove it, use

sudo rmmod gs_usb

Configure automatic loading at startup:

echo "gs_usb"  | sudo tee /etc/modules-load.d/gs_usb.conf

Non-root users require corresponding user group membership.

Check the device group ownership. Assuming ttyUSB0 (actual device may vary):

stat -c "%G" /dev/ttyUSB0

• Arch Linux: Should return uucp

sudo usermod -aG uucp $USER
newgrp uucp

• Debian/Ubuntu: Should return dialout
• Fedora/RHEL: Should return dialout

sudo usermod -aG dialout $USER
newgrp dialout

Device Configuration

For demonstration purposes, we'll use a simulated device. You can configure the baud rate and sample point in the device settings.

Baud Rate Setting

The baud rate setting is used to configure the baud rate of the CAN bus.

Click the Bit Timing button to open the bit timing configuration window.

Interactive Mode and Node Scripts

EcuBus-Pro offers two primary methods for CAN communication:

• Interactive Mode: For manual frame transmission
• Node Scripts: For automated communication using custom scripts

Interactive Mode

Each frame can be configured for periodic transmission or manual triggering (single-shot or key-bound).

You can add frames in two ways:

• Manual frame configuration
• Import from DBC database

Node Scripts

Nodes can be configured with UDS capabilities (tester) and custom scripts.

Example script for periodic signal updates:

import { setSignal } from 'ECB'
let val = 0
// Update signal value every second
setInterval(() => {
  setSignal('Model3CAN.VCLEFT_liftgateLatchRequest', val++ % 5)
}, 1000)

Diagnostic Operations

1. Tester Configuration

   • Configure addressing
   • Set diagnostic parameters

2. Diagnostic Services

   • Configure diagnostic services
   • Create schedule tables and sequences

3. Message Monitoring

   • View transmitted and received messages in the trace window