Multi-serial port data communication card equipment based on CPCI bus and method thereof

A bus communication and multi-serial port technology, applied in the field of data communication, achieves the effects of low power consumption, high data transmission rate and wide application range

Active Publication Date: 2009-09-09
上海许继电气有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] Although the above technologies have been developed relatively maturely, there is no technical solution that can integrate the above technical means and apply them to the data communication of industrial computer

Method used

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  • Multi-serial port data communication card equipment based on CPCI bus and method thereof

Examples

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Embodiment Construction

[0046] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.

[0047] see figure 1 As shown, the multi-serial port data communication card device based on the CPCI bus, including:

[0048] (1) CPCI bus communication module, this CPCI bus communication module is connected with host system by CPCI bus, and submits data to host system and receives the sending data of host system; Described CPCI bus communication module is PCI slave device manager ;

[0049] (2) at least two UART communication management modules with automatic RS485 communication flow control function, each described UART communication management module is connected with the described CPCI bus communication module respectively, carries out the sending and receiving processing of communication data, and when data is sent Complete or when receiving data arrives, send interrupt notification to host system by CPCI bus; Described UART communica...

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Abstract

The invention relates to multi-serial port data communication card equipment based on a CPCI bus and a method thereof. The equipment comprises a CPCI bus communication module, at least two UART communication management modules with automatic RS485 communication flow control functions, a magnetic isolation module, and two-in-one RS232/RS485 communication transceiver modules which have the same number as that of the UART communication management modules. The method comprises the steps of equipment initialization processing operation, data sending processing and data receiving processing. The multi-serial port data communication card equipment based on a CPCI bus and the method thereof helps operate a system more reliable, lays a foundation for high availability, simplifies a RS232/RS485 switching circuit and actually realizes intelligent RS232/RS485 switching control; power consumption of the multi-serial port communication equipment using the magnetic isolation module is only 1/10-1/50 of that of the multi-serial port communication equipment using a photoelectric coupler; the multi-serial port data communication card equipment has higher data transmission rate, time sequence precision and transient common mode inhibition capacity; and the serial communication data transmission rate can reach 230,400bps, thus the equipment is safe and reliable, and has relatively wide application scope.

Description

technical field [0001] The present invention relates to the field of data communication, in particular to the technical field of CPCI bus communication, in particular to a multi-serial port data communication card device and method based on CPCI bus. Background technique [0002] In modern society, with the continuous development of data communication technology, it has been applied more and more in the field of industrial control. At the same time, in the field of widely used industrial computer, RS232 / RS485 serial communication has become a conventional mode. [0003] As a compressed PCI (Compact PCI, CPCI for short) technical specification, the popular PCI bus-compatible architecture can be implemented with the specification of the European card. This modular CPCI template can be flexibly combined into a system suitable for various industrial field applications. In order to improve the maintainability of the CPCI system, it is necessary to add a hot-swappable function t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08G06F13/38G06F13/42
CPCY02B60/1228Y02B60/1235Y02D10/00
Inventor 王永刚岑登青
Owner 上海许继电气有限公司
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