Internet communications using TCP/IP is increasing in the industrial sector. Using Ethernet for network in industrial area is appealing because the required cabling is already installed. The CAN-Ethernet Gateway from ICP DAS is a solution that enables CAN networks to be coupled together over the Internet/Ethernet, whereby remote monitoring and control is possible. The CAN-Ethernet Gateway controls networked communication and makes a transparent CAN-based application interface available to the user.

The device supports a transparent, protocol-independent transfer of the CAN messages, thus allowing its implementation into a wide range of possible applications. Furthermore, the CAN-Ethernet Gateway can be used with various higher layer CAN protocols (e.g. CANopen, DeviceNet or other proprietary protocols). The following figure shows the application architecture for CAN-Ethernet Gateway .

Furthermore, I-7540D also can be used as Ethernet to CAN/RS-232/485 Device Server. The Device Server is an appliance that network enables any device with a serial communication port. By virtue of its independent operating system, protocol independence, small size and flexibility, Device servers are able to meet the demand of virtually any network-enable application. Most devices don't have network ports. I-7540D allows those devices to become connected to the network.

Applications:

• Building Automation
• Home Automation
• Control System
• Monitor System
• Vehicle Automation

Data Process
The VxComm technology can be used to simulate COM/CAN ports of the I-7540D to become a COM port of PC . With the help of VxComm driver, users can access the remote COM/CAN ports of the I-7540 just as them would access the PC's COM port. The block diagram of data processes in I-7540D is given as follows:

Main Features:

• 80186-80 Embedded CPU, or compatible
• Ethernet Protocols, TCP,UDP,IP,ICMP,ARP
• 10/100 Base-TX Ethernet Controller
• Reloadable Operating Software
• Message transmitted by using TCP/IP protocol
• Diagnostics
• COM driver support interrupt & 1K QUEUE Input & Output buffer
• Support one RS-232 port, one RS-485 port and one CAN port
• 2500Vrms photo-isolation protection on CAN side.
• Jumper select 120Ω terminator resistor for CAN channel
• Phillip 82C 250/251CAN Transceiver
• Support both CAN specification 2.0A and 2.0B.
• Max transmission speed up to 1M bps for CAN and 115.2K bps for RS-232 & RS-485
• Max transmission distance of CAN over 1000m (follow CAN specification)
• Built-in self-tuner ASIC controller on RS-485 port
• 7-segment LED display.
• Software configurable CAN and RS-232 communication parameters
• Firmware updated from COM1 or Ethernet port
• Support Web Configuration
• Support max 25 Ethernet clients connection
• Support for Virtual COM technology

Utility

• IP, Gateway, Mask configuration
• CAN bus Baud rate configuration
• CAN BTR0 and BTR1 configuration
• CAN acceptance filter configuration
• CAN 2.0A or 2.0B specific selection
• Error code Responded selection
• Easy test to transmit/receive CAN messages