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Parallel and serial comprehensive bus system and data transmitting method

A bus system, comprehensive technology, applied in the direction of electrical digital data processing, instruments, etc., to achieve the effect of enhancing driving capability, extending transmission distance, and saving running time

Inactive Publication Date: 2008-01-23
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] In order to solve the problem that the existing numerical control system cannot communicate with remote external devices due to the parallel communication of the host computer, the present invention provides a serial-parallel integrated bus system and its data transmission method

Method used

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  • Parallel and serial comprehensive bus system and data transmitting method
  • Parallel and serial comprehensive bus system and data transmitting method
  • Parallel and serial comprehensive bus system and data transmitting method

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Embodiment Construction

[0013]As shown in Figures 1 to 9, the serial-parallel integrated bus system of this specific embodiment is applied in a PC-based numerical control system, and the following main device 1 is an industrial PC, which has a parallel bus expansion slot. The serial-parallel integrated bus system of this specific embodiment includes a master device 1 containing a parallel bus interface and at least one slave device 2, and the serial-parallel integrated bus system also includes a device for connecting the master device and the at least one From the bus cable 3-1 of the device and an interface conversion circuit 3-2, the interface conversion circuit 3-2 includes a signal for converting the signal conforming to the parallel interface standard output by the master device 1 into conforming to the serial interface standard A data output interface A for the differential signal, a data input interface B for converting the differential signal conforming to the serial interface standard output ...

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Abstract

A serial and parallel integrative bus system and data transfer method, it involves a kind of serial and parallel integrative bus system and data transfer method of the numerical control, which the parallel communication mainframe can not realize the data exchange with the long-distance peripheral equipment in the existing numerical control system. The invention have a interface transform circuit (-) that consist of data input interface (-), data input interface (-) and address input interface (-); the bus system can automatic configure the sub-equipment of it by the control signal output end (ID) of the main-equipment. The invention not only has the high-speed of parallel communication mode, but also can extend the transmit distance of the bus. The bus system is specially fit for numerical control (CNC) base on PC, the CNC can extend the ability of control peripheral equipment by PC.

Description

technical field [0001] The invention relates to a serial-parallel comprehensive bus system and a data transmission method applied to a numerical control system. Background technique [0002] Generally, data communication in the network is divided into two types: parallel communication and serial communication. Among them, parallel communication can transmit multiple bits of data at the same time, and the communication speed is faster, but it is not suitable for long-distance communication. Therefore, the internal bus of the computer adopts parallel mode. Data transmission; in serial communication, the data is transmitted bit by bit, the speed of serial data transmission is low, but the transmission distance can be very long, so the data exchange between the computer and peripheral equipment mostly adopts serial way of communication. In the PC-based numerical control system (CNC), due to the poor anti-interference ability of the parallel bus inside the PC and the limited tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/38
Inventor 李凤阁
Owner HARBIN INST OF TECH
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