CAN Virtual Circuit and Converter Module

The CAN Virtual Circuit and Converter Module (VCCM) provides a hardware interface between a CAN 2.0A/B network and a RS232 serial communication port.

The VCCM receives messages on the CAN bus and converts them for output on the RS232 port. In a similar fashion, data arriving from the RS232 port are reformatted and transmitted on the CAN bus, providing for a bi-directional mode of communication. There are two modes of operation that can be selected and depending on the mode selected, the message processing performed is different.

In the Virtual Circuit (VC) mode, the VCCM provides a virtual serial link across the physical CAN network.  Data arriving at the RS232 ports on the VCCM are converted to CAN packets on the CAN bus.  Specific CAN messages on the CAN bus are converted to a byte stream and output via the on-board RS232 ports.  Two virtual circuits can be handled at the same time.

In the Converter Mode (CM), the VCCM converts valid ASCII message received on the RS232 port to CAN packets and sends them out to the CAN network.  CAN packets arriving over the CAN network are received and converted to ASCII format and sent out the RS232 ports.  This provides full access to the CAN network over the RS232 serial interface.

For a much more detailed understanding of the CAN-VCCM, please read the CAN-VCCM Functional Description.

Features

• CAN bus speed up to 1 mBit/Sec
• CAN Bus Optically isolated
• 2 RS232 ports up to 38.4 kBit/Sec each
• 4 CAN receive filters (in CM mode)
• Timed transmit configurable (in VC mode)
• Bus termination configurable via DIP switchs (60 ohm, 120 ohm, simple or split mode)
• All parameters fully configurable through either RS232 port
• Configuration via simple ASCII terminal interface (ie: Hyperterminal, etc.)

Applications

1. Provide RS232 to CAN interface for legacy systems.
2. Implement virtual serial links to target systems over the CAN network.
3. Simple debugging tool for working with CAN networks.
4. Provides a means of transparent firmware download over the CAN network.
5. And many more...

Please contact us at info@acacetus.com for additional information.