Vision Systems’ VScom USB-CAN ISO is an adapter from USB to CAN with galvanic isolation. It connects a PC to the CAN network via the USB interface, while protecting the PC from high voltage problems on CAN network signals.
SINCE CURRENT COMPUTERS ALL HAVE SEVERAL USB PORTS, the installation is simple. Even USB 1.1 with a maximum speed of 12 Mbit/s is sufficient to connect the adapter to a computer. It can be used to monitor data traffic, as well as sending control information. The CAN communication comes with a speed of 1 Mbit/s.
Since hardware-based automatic flow control is implemented at the interface between the CAN controller and the PC, data reliability is high. The ASCII conversion protocol is useful in developing and testing any configuration. Users open the serial port via a terminal program and have a way to talk to the CAN controller. The same way they can also transmit and receive CAN frames. Applications programmed by users load the library (DLL), which handles the ASCII conversion.
Programmers handle only the CAN frames and status, they do not have to care about the ASCII conversion in their applications. This API is supported in C/C++, C#, VB.NET, Delphi and Labview.
USB-CAN also supports CANfestival, an open source CANopen framework and CANhacker, a tool for analyzing and transmitting frames on the CAN network, is included in the product package. A set of Mapper DLLs simulates CAN hardware from other manufacturers. Users configure their system for those products or for the USB-CAN adapter as a replacement. So existing software uses the adapter without replacing the application or modifying it.
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