KR20050022759A - PCI Bus Interface Board for PC-NC - Google Patents

Abstract

PURPOSE: An interface board for interfacing a PCI(Peripheral Component Interconnect) bus and a motion board on PC-NC(Personal Computer Based Numerical Control) is provided to design/make a motion card using a PCI bus interface in order to enhance speed performance on interface between the motion board and a PC. CONSTITUTION: For a motion controller, DSP320C33 is used as a CPU, an external memory is extended, and an encoder signal is received. A dual port RAM is used for exchanging data with the PC, which is a main controller. The PC and the motion controller are interfaced with the PCI, and interface details are stored in an FPGA(Field Programmable Gate Arrays).

Description

PCI bus interface board for PC-NC {PCI Bus Interface Board for PC-NC}

PC-NC (Personal Computer Based Numerical Control), which is attracting attention as a new technology for the next generation of machine tools, combines PC technology and numerical control device. The domestic technology of the numerical control device is very weak compared to foreign countries, and most of them are imported and used in foreign countries. Currently, the development by domestic technology is only for the functional type, and many machine tool companies are avoiding its use due to the problem of price and reliability. Therefore, the development of high-speed high-precision machine tool controller and drive part technology is needed to spread domestic capital goods industry technology. Among them, the drive technology for PC-NC using PCI bus is needed for high-performance PC-NC.

In PC-NC, it is advantageous to use the PCI bus to improve the speed performance in the interface between the motion board and the PC. Therefore, it is necessary to conduct the research necessary for the motion controller for the PC-NC using the PCI bus. Design and manufacture

Overview and Benefits of PCI Local Bus

1) It is a synchronous bus with 32-bit or 64-bit data path and operates up to 32MHz.

2) Multiplexed architecture reduces pin count and reduces PCI component size.

3) The configuration of components connected to the PCI local bus is easy.

4) Multiple masters can exist and have overlapping central bus arbitration.

The signal lines of the device for the PCI local bus interface are as follows.

The following figure is the architecture block diagram of the PCI motion card designed in this study.

In general, DSP320C33 was used as the CPUf of the motion controller, the external memory was expanded, the encoder signal could be received, and Dual Port RAM was used for data exchange with the main controller PC. In the interface with the PC, the main content of this study is embedded in the FPGA and PCI.

The following is a circuit diagram of each part.

The DSP Control Chipset circuit is as follows.

The PCI bus connection diagram is as follows.

PCI Motion Chipset pin connection is as follows.

The pin connection diagram of the DSP which performs the motion control algorithm of each axis is as follows.

Based on the data for building the PCI bus interface system for PC-NC, the overall study on the PCI bus and the PCI bus motion card were designed. The specifications and features of the designed motion card are as follows.

Claims (1)

PCI bus interface board for PC-NC featuring a motion card using the PCI bus interface.