CAN Core Module

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Last Modified:

18 July 2002

6172 CAN Core Module

Develop your own CAN device with the CAN Core Module.
It's quick and easy, saves time and money....

The CAN Core Module is divided in three parts:

The CAN protocol handler (Our part of the development)
available CAN protocols are CANopen and DeviceNet
The sequence program (Your part of development)
Write with the sequence assembler tool the connection between 1 and 3
tools and application notes are free available on this site
(also programmable in C, with approximately the same execution speed as the assembler)
Hardware interface (connect your chips, display, keyboard and so on)
interface your electronics to the I/O ports, SPI, I2C, RS232
(Let us know what you want to build and we give the support you need)

The highlights on this CAN core Module

About the Product
- Saves 70% of the time and money of new developments
- Can be the 'heart' of your new CAN device;
  - CAN protocol (CANopen or DeviceNet) on board
  - Add your hardware (A/D, D/A converters, shift registers, and so on)
  - Write a sequence program to interface CAN with your hardware (with the free assembler)
- Can be used for stand alone tasks like a micro PLC
- It is fast
- Low cost
About the Hardware
- Small size 'piggy back' board with
  - CAN bus interface
  - 8 Digital Inputs
  - 12 Digital Outputs
  - SPI shifter
  - I2C port
  - RS232 port
  - PWM output
  - Dual analog inputs
- 3 - 5 Volt I/O ports
About the CANbus
- Bus connection
  - via dual RJ10 connectors
    - 2 wires for the Node and application supply
    - 2 wires for CAN bus communication
  - via 20p PCB connector
- Up to 100 Nodes in one system
- Length up to 2000 meters (dependent on baud rate)
- 127 addresses selectable via software or PCB connector pinning
- 6 CAN baud rates selectable via software or PCB connector pinning
About the Application Layer/Protocol
- The different Application Layers
  - CANopen with
    - SDO/PDO
    - Node guarding / life guarding
    - Emergency messages
  - DeviceNet
About the Sequencer
- Sequence programs
  - Connect the CAN protocol with customer I/O
  - Handles data with all kinds of bit and byte manipulating instructions
  - Start on CAN bus, I/O events or timer activities
- Up to 32 sequences
  - 4 sequences can perform simultaneously 'PLC like' local tasks
  - 3 special sequences for; start, stop, reset Node
- Simple powerful instruction set
- Free sequence assembler
- Also programmable in C
About the Size
- Small size 50 x 55 x 10+ mm
- four 20 pin dual row connectors
About the Signaling
- two LEDs can be placed on the user PCB to indicate bus activities
About the Application areas
- Machine building industry
About the Support
- Application Notes on Internet
- Designers Kit 6197 with evaluation board, PC interface and software
- Free sequence assembler and configuration program WIN6000
- Free application support (connection and sequence example)
- Free up-date Higher Layer Protocol

Block Diagram

Functions

CAN bus interface

two 4-wire RJ10 CAN bus connectors
and via a 20p PCB connector

8 Digital Inputs

React on signals, could start a sequence
(direct or under sequence control)

12 Digital Outputs

Could be used for CS, strobe or address select
(direct or under sequence control)

SPI shifter

Shift data in or out A/D or D/A converters, shift registers extend digital I/O
(direct or under sequence control)

I2C port

for communication with I2C devices like LCD displays, digital potentiometers and so on (see application note AN001)
(direct or under sequence control)

RS232 port

for communication up to 38K BPS with handshake

PWM output

adjustable frequency and duty cycle

Ready signal

Indicates the status of the board, enables outputs

Sync output

Can be used to synchronise multiple applications via the CAN bus

Dual analog inputs

two 8 bits analog inputs

3 .. 5 Volt I/O ports

All digital output is fully functional with the supply connected on Vio
2.7V, 3V, 3.3V or 5V

MPU supply

by external 5 Volt or 5Vreg from the CAN bus power Vbb

Node Address

by connecting ID1 - ID64 to 5V or ground

CAN baud rate

by connecting BS1, BS2 and BS3 to 5V or ground

Sequencer

Simple instruction set
Stored in Flash memory
Start automatic or after read or write

CAN Micro Controller Module on Host Printed Circuit Board

More design information

The CAN bus

This Node cab be connected via a 4-wire cable with RJ10 connectors
On both ends of the cable a 120 Ohm terminator must be connected.
The length of the cable depends on the baud rate.
The CAN Nodes can be powered via the CAN bus cable.

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