USB/ RS232 to CANBUS adapter with ≤150mA @12V, -40~85℃ storage temperature.
● Support USB 2.0 protocol.● 1 CAN-bus communication interface, support 5Kbps-1Mbps baud rate.● 1 USB 2.0 interface (12Mbit).● 1 RS-232 communication interface, support 300bps-250Kbps baud rate.
Dimension (mm/ inch)
Tips: The Features of CANBus Control.
CANBus uses a bit-oriented damage arbitration method to solve the conflict problem caused by media multiple access. The arbitration process is: when the bus is idle, the line is shown as a "recessive level", and any station can send messages at this time. The frame start field sent by the sending station generates a "dominant level", which marks the start of transmission. All stations are synchronized with the frame start leading edge of the station that first started sending. If there are multiple stations sending at the same time, then compare bit by bit in the sending arbitration field. The arbitration field contains the identifier ID (standard is llbit), which corresponds to its priority. When each station sends the arbitration field, it compares the sending bit with the line level, and sends if they are the same; if they are different, they learn that the priority is low and exit the arbitration without sending. The system response time has nothing to do with the number of stations, only depends on the priority of the arrangement. It can be seen that this media access control method does not cause data and channel bandwidth damage like Ethetnet's CSMA/CDCA protocol.