COMMUNICATION SYSTEM HAVING A CAN BUS AND A METHOD FOR OPERATING SUCH A COMMUNICATION SYSTEM
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Abstract
A communication system and a method for operating a communication system, the communication system having a CAN bus and at least two devices connected with the aid of the CAN bus. Such a device has a CAN control unit, an asynchronous, serial communication (ASC) interface unit, and a switch. The CAN control unit is suitable for transmitting, in a first transmission mode, CAN data frames over the CAN bus with the aid of a first physical protocol. The asynchronous, serial communication interface unit or ASC interface unit is suitable for transmitting, in a second transmission mode, ASC data frames over the CAN bus with the aid of a second physical protocol. The switch is designed for switching over between the first transmission mode and the second transmission mode as a function of at least one agreement effective between the device and at least one other device.
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Citations
33 Claims
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1-14. -14. (canceled)
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15. A communication system, comprising:
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a CAN bus; and at least two devices connected using the CAN bus, at least one of the devices having; b1) a CAN control unit which is suitable for transmitting, in a first transmission mode, CAN data frames over the CAN bus using a first physical protocol, b2) an asynchronous, serial communication (ASC) interface unit, which is suitable for transmitting, in a second transmission mode, ASC data frames over the CAN bus using a second physical protocol, and b3) a switch adapted to switch over between the first transmission mode and the second transmission mode as a function of at least one agreement effective between the at least one device and at least one of the other devices. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method for operating a communication system having a CAN bus and at least two devices using the CAN bus, comprising:
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a) equipping at least one of the devices with a CAN control unit which is suitable for transmitting, in a first transmission mode, CAN data frames over the CAN bus using a first physical protocol; b) equipping at least one of the devices with an asynchronous, serial communication (ASC) interface unit, which is suitable for transmitting, in a second transmission mode, ASC data frames over the CAN bus using a second physical protocol; and c) switching over a predefined number of devices between the first transmission mode and the second transmission mode as a function of at least one agreement effective between the predefined number of devices.
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Specification