Gateway Ethernet / CANopen
EtherCAN CI-ARM9 is a CAN to 10BaseT Gateway. Computer networks worldwide are using Ethernet with the TCP/IP protocol family. With the EtherCAN gateway you are connecting the TCP/IP world with your CAN based control network. Available is a CAN-Layer-2 and CANopen Server software.
The hardware base for the EtherCAN CI-ARM9 forms a powerful Freescale
ARM9 CPU with an integrated Ethernet controller and dual FlexCAN interfaces.
On the EtherCAN CI-ARM9 an Embedded LINUX™ operating system is installed.
Connecting "embedded" controllers via the Internet becomes more and more popular in the last time. World wide computer networks are using the common Ethernet cabling standard and TCP/IP as common protocol family.
The reason is the increasing data communication for recording the production and operating data as well as for visualization and remote maintenance.
The EtherCAN CI-ARM9 Gateway combines the decentral CAN and CANopen networks with the classical Ethernet network. To communicate via Ethernet the TCP/IP protocol is used, while on the CAN bus the communication is realized by CANopen or another user-specific protocol.
Merging the data of production control and data acquisition with operating data lately became a standard requirement of application users.
It is foreseeable, that the real-time control of machines still will be implemented directly with event controlled real time capable field buses for a longer period of time. Therefore linking the control network over a gateway to office or automation networks or to the Internet at all via TCP/IP is an interesting and cost-effective solution.
This task is fulfilled by the CAN-TCP/IP Gateway EtherCAN CI-ARM9. The basis for the EtherCAN forms a powerful 32-bit CPU with integrated Ethernet controller and the CAN-Controller Philips SJA1000.
On the EtherCAN CI-ARM9 an Embedded LINUX™ operating system is installed. Therefore a lot of services like FTP, Telnet or an integrated web server but also a RS-232 interface are available to run user-specific applications.
For own developments a Developer Package is available. It includes besides tools to generate the FLASH image, a cross compiler and necessary libraries. Further examples in C, Java or Tcl can be downloaded from our web site www.port.de.
The usage of the CANopen Library is possible to create CAN- open applications. Of course ready-to-run programs are available.
For the usage as gateway to CANopen based systems the CANopen Server m4d running on the EtherCAN realizes the complete handling of the CANopen protocol. It runs as a Network Management Master, can configure LSS slaves with the LSS commands and supports the following CANopen services:
- NMT Services
- Heartbeat, Node Guarding
- SDO Services including Domain Transfers
- PDO Consumer and Producer
- SYNC Producer
- Emergency Consumer
Cyclic services like SYNC of Heartbeat are handled autonomously.
As protocol between a client application and the CANopen Server the CiA specification DSP309-3 is used at the Ethernet side.
For a comfortable handling of the CANopen Server the platform independent and graphical application CANopen De- vice Monitor can be used.
For CAN based systems without High-Layer protocol the EtherCAN CI-ARM9 provides the CAN server horch that can send all received data via a TCP/IP port to other applications.
Sending CAN message via the CAN server is possible, too. In the easiest case the server is used as a CAN analyzer via the Ethernet. The CAN Analyzer CAN-REport can be used for this.
The main advantage of such a network linking is the possibility to remote control or do a remote observation and/or service of machines and installations from any place in the world.
The following advantages are to be mentioned further:
- Combination of the advantages from the CAN/CANopen fieldbus technology with the Ethernet
- high transmission capacity in the Ethernet area
- high security and reliability
- no limitation referable the network topology
- TCP/IP is an established standard in information technology
- free access is available to all modules about the network
- low costs per module and for the overall system
- usage of the TCP/IP-protocol
By using the EtherCAN CI_ARM9gateway also costs for expensive special wirings can be saved, because existing CANopen networks or Ethernet connections can be used again.
10 - 30 V
i.MX287 ARM926EJ-S CPU
2x 3 pole screw-in-connector
for data storage
-20°C - +60 °C
120mm x 100 mm x 25mm
approx. 150 g
Scope of Delivery
- EtherCAN CI-ARM9 Gateway
- 0540/30 EtherCAN-CI-ARM9
- 0540/31 EtherCANopen-CI-ARM9
- 0540/33 Developer Package DEV-PACK-ETH V3.0
- 0580/10 CAN-REport CAN network analyzer (Windows version)