Giới thiệu giải pháp, sản phẩm, ứng dụng truyền thông CANopen hãng ICP DAS

CANopen is a CAN-based application layer protocol. It was developed as a standardized embedded network with highly flexible configuration capabilities. CANopen was designed for motion-oriented machine control networks, such as handling systems. By now it is used in many various fields, such as medical equipment, off-road vehicles, maritime electronics, public transportation, building automation, etc.

The CANopen specifications cover application layer and communication profile, as well as a framework for programmable devices, recommendations for cables, connectors, SI units, and prefix representations. The application-layer as well as the CAN-based profiles are implemented in software.

CANopen features

• Allow multi-master architecture on one bus
• 10k,20k,50k,125k,250k,500k,800k,1M bps baud rate
• The bus length is from 25m(1M bps) to 5Km(10K bps)
• Easy access to all device parameters.
• Device synchronization.
• Cyclic and event-driven data transfer.
• Up to 128 nodes can be participated in the same CAN network.
• High transmission speed.
• Support Guarding and Heartbeat protection mechanism

CANopen Communication

CANopen Statue Transition

Lifhtweight Device Monitoring

CANopen provides two network protection mechanisms, Node Guarding and Heartbeat. For Node Guarding, the master will send a request to check slave status. If some slave does not confirm this request, the master will indicate them with Node Guarding Fail. For Heartbeat, these slaves will send heartbeat message to the master let master know these slaves are alive. If the master does not detect some one’s heartbeat, then the master will indicate it with Heartbeat Fail.

CANopen Digital I/O Pair-connection

CAN-2000 series and CAN-8000 series are designed for combining sensors and actuators into, CANopen or DeviceNet network. All of them provide corresponding EDS files for standard CANopen or DeviceNet master interfaces. The mainly differences between CAN-2000 series and CAN-8000 series are the product size and the capabilities of I/O expansion. CAN-2000 series is a palm-size and stand-along slave device. CAN-8000 series is useful for centralizing control system. It provides 1/2/4/8 slots for fl exible I/O selections to match various applications. Each slot allows you plugging one I-8000/I-87K series I/O module to expand I/O channels, and hot-swap technique is supported.

With the same hardware, the CAN-2000 series and CAN-8000 series can be installed either of, CANopen fi rmware. The product names are classifi ed as

CANopen: CAN-8x23, CAN-2xxxC

CANopen Series Common Features

• Up to 128 nodes can be participated in the same CAN network
• CANopen Version: DS-301 v4.01
• Device Profile: DSP-401 v2.0
• Error Control: Node Guarding protocol
• Emergency Message: Yes
• 2500Vrms photo couple isolation on the CAN side
• Jumper or DIP switch for 120Ω terminal resistor of CAN bus
• Watchdog inside 

Modules Support

Gateway

The Modbus TCP/RTU and DCON protocol gateways are ready for users. The series can be used to integrate different protocol system. Users also easily update their old system to the CANopen system with the series. They are I-7231D, I-7232D, GW-7433D.

Comunication Module

CANopen Master Series：

Comparison with PISO-CPM100 and PISO-CAN 200/400-D/T 

Hardware Compare

Performance Test with PISO-CPM100 and PISO-CAN 200/400-D/T

Test environment：

CPU：Intel(R) Pentium(R) 4 CPU 2.40 GHz
OS：Microsoft Windows XP Professional Version 2002 Service Pack 2
RAM：512 MB
CAN Baudrate：1000 bps

Test result：