This means that messages are not transmitted from one node to another node based on addresses. To ensure that reflection does not cause communication failure, the transmission line must be terminated.Īnswer: CAN protocol is a message-based protocol, not an address based protocol. Why CAN is having 120 ohms at each end?Īnswer: To minimize the reflection reference, to reduce noise. Overload frame – 0-12 superposition flags, 8 recessive (Delimiter)ģ. Types of errors – ACK error, Bit error, Stuff error, Form error, CRC errorĮrror frame – 0-12 superposition flags, 8 recessive (Delimiter) Types of frames – Data, remote, Error frame and Overload frame – Installation place exchangeable without electric problems.Īrbitration Field – 11 bit Identifier, 1 bit RTR (or) 11 bit, 1SRR, 1IDE, 18 bit, 1RTRĬRC Field – 15 bits, Delimiter (1 bit recessive)ĪCK Field – 1 bit, Delimiter (1 bit recessive) – Additional elements (e.g., control units) are easy to integrate. – Wiring less complicated, more economic. – More reliably, e.g., fewer plug-in connectors that might cause
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The Controller Area Network (CAN) bus is a serial asynchronous bus used in instrumentation applications for industries such as automobiles. CAN is a message-based protocol, designed specifically for automotive applications but now also used in other areas such as industrial automation and medical equipment.Ĥ. Controller–area network (CAN or CAN-bus) is a vehicle bus standard designed to allow microcontrollers a devices to communicate with each other within a vehicle without a host computer.ģ. CAN is a multi-master broadcast serial bus standard for connecting electronic control unit (ECUs).Ģ.