The CPC-USB/embedded is a USB CAN Bus adapter, for use with Windows or Linux based systems in commercial and industrial environments. Due to its compact size it is ideally suited to applications in embedded PCs. It is installed directly at a SUB-D9 case opening or a slot panel and wired with the included cable to a pin connector of an internal USB interface of the main board.
The CPC-USB/embedded USB CAN Bus adapter is equipped with a Cortex M3 microcontroller providing onchip CAN and USB controllers. By combining the powerful CPU with internal peripherals low latencies can be achieved.
The interface is powered via USB, a separate supply for the CAN side is not needed. The CPC-USB/embedded provides galvanic decoupling between CAN and USB and has an extended operating temperature range. It supports 11-Bit and 29-Bit CAN identifiers.
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As a member of the CPC family of PC to CAN interface products, the CPC-USB/embedded benefits from the CPC Software Interface Framework, which provides a consistent host software interface environment for Windows and Linux based applications that is independent of the PC hardware interface being used.
The CPC USB/ARM7 can also be used with SocketCAN in Linux based applications.
CPC-USB includes a CAN segment connected by a male plug of type D-Sub 9, the pin assignment is complying to CiA DS-102 standard. In addition, the interface includes a USB connector that also carries the supply for CPC-USB. The following table shows the assignment of the CAN connector:
|2||CAN_L||CAN data line (dominant low)|
|7||CAN_H||CAN data line (dominant high)|
|Voltage on bus connections||-30||+30||V|
Any (also temporary) stress in excess of the limiting values may cause permanent damage on CPC-USB and other connected devices. Exposure to limiting conditions for extended periods may affect the reliability and shorten the life cycle of the device.
All values, unless otherwise specified, refer to a supply voltage of 5V and an environmental temperature of 20°C.