communication card based on can open communication protocol
A communication protocol and communication card technology, which is applied in the field of communication cards based on CANopen communication protocol, can solve the problems of lack of flexibility, only replacement of equipment, and inability to configure CANopen communication card master-slave mode, etc.
Active Publication Date: 2020-10-02
中电智能科技有限公司
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Problems solved by technology
[0003] The CAN open communication cards currently on the market mainly have the following problems: On the one hand, there is only a single CAN bus interface, which is not conducive to the expansion of the control network, and a PLC can only belong to one control network
On the other hand, the user cannot configure the master-slave mode of the CAN open communication card. Generally, it can only be used as a CAN open master station or a CAN open slave station, which lacks flexibility. When users need to use different types of CAN open controllers, they can only replace the device
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0039] It should be noted that like numerals ...
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The embodiment of the invention provides a communication card based on a CAN open communication protocol. The communication card comprises a microprocessor, a transceiving circuit and an interface circuit, wherein the transceiving circuit comprises at least two CAN bus communication interfaces for being in communication with different CAN network. The microprocessor can be used for configuring theworking modes of all the CAN bus communication interfaces, and the working modes include the main station mode and the auxiliary station mode. The interface circuit is used for being in data and command interaction with external devices through PCI buses. The communication card provides at least two independent CAN bus communication interfaces so as to be in communication with two or more communication networks at the same time. The microprocessor can configure the working modes of all the CAN bus communication interfaces to be the main station mode or the auxiliary station mode and is more flexible to use. The interface circuit is in communication with the external devices through the PCI buses, so universality is higher, and the communication speed is improved.
Description
technical field [0001] The invention relates to the technical field of automatic control, in particular to a communication card based on the CAN open communication protocol. Background technique [0002] Due to the advantages of reliability, real-time, low cost, anti-interference and Jiang Rong ability, CAN bus and its high-level protocol CAN open have been widely used in the field of automation control, such as vehicle communication systems, elevators, heavy-duty vehicles , construction machinery, operating system, distributed control network, etc. [0003] The CAN open communication cards currently on the market mainly have the following problems: On the one hand, there is only a single CAN bus interface, which is not conducive to the expansion of the control network, and a PLC can only belong to one control network. On the other hand, the user cannot configure the master-slave mode of the CAN open communication card. Generally, it can only be used as a CAN open master st...
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IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/24215
Inventor 丰大军南扬陈海郭肖旺贡春燕傅一帆刘雪飞王永峰
Owner 中电智能科技有限公司