通过参数定义和功能模块化结构设计，基于S7 - 200plc软件，编制出一套控制程序，在配置西门子802d机床数控系统上进行了调试。
Through parameters definition and function modularization design, one set of control software was programmed based on S7-200PLC, which was tested in CNC machine constructing with Siemens 802d.
并阐述了当体解软件的组败、构造和体解控造外口IPC、PMAC和DPRAM的特色。铺示了里背网络化造造开放式数控体解的一类旧方式。
Lastly, it expounds the constitution, structure of system hardware and quality of system control core IPC, PMAC and DPRAM, puts forward a new method of open NC system towards network.
文章通过CAN总线在数控测井仪中的应用过程，给出了CAN总线的硬件连接，波特率计算，软件初始化及报文信息的收发初始化，介绍了CAN总线的使用方法。
Through the application of CAN bus in digital Control Logging system, the paper describes the hardware composition, introduces the calculation of baud rate and Software initialization.
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