A controller area network (CAN) is a specialised internal communication network that connects microcontrollers and devices so that they can communicate with each other via message-based protocols without the need for a computer host. They are an important part of the communications network in vehicles, known as the 'bus'. Each CAN controller on the bus is called a node. Each node is configured to receive data from the sensor equipment and transmit it to a PC.

What are CAN controllers used for?
CAN controllers facilitate communication amongst devices in a small range network and are commonly used in automotive applications. These controllers are also typical in the medical instrument industry, factory automation mechanisms and to support semiconductor-based machinery in a variety of sectors.

Types of CAN controllers
CAN controllers come in two types:

Integrated, meaning there is more than one controller on the CAN bus (network system). The integrated controller requires less space and facilitates faster and more reliable communication to the microcontroller.
Standalone, meaning there is a single controller on the CAN bus (network system). An independent CAN controller functions as a memory chip allowing flexibility of data transmission.

CAN Controllers