The bottom control unit is controlled by an at90s8535 mcu and includes l298n , keyboard and led . the software is also designed in the paper 下位机是avr单片机at90s8535 ，硬件电路包括l298电机驱动电路、键盘和led显示电路等。
The new controller system is developed with multiple 80c196kc - embedded controller and a personal computer . and designed the hardware and software system 文中还给出了系统硬件和软件的设计方法，以及上、下位机数据通讯协议等。
The introduction of the embedded real - time operating system ucos - ii in the design make the lower computer respond more quickly to the upper computer 设计中引入了嵌入式实时操作系统ucos - ii ,使得下位机对上位机的响应速度大为提高。
Next we make the programs , which consist of plc and motion programs of pmac , motion control programs and hmi programs 接着在此硬件平台上开发应用程序,包括下位机pmac卡的plc和运动程序、上位机ipc的运动控制程序和友好的人机界面。
Plc and motion programs of pmac are compiled and debugged in software pewin . motion control programs and hmi programs are r & d in visual basic 6 . 0 下位机程序由pmac卡自带的pewin软件编写和调试;上位机程序在visualbasic6 . 0平台上开发。
In chapter 3 , the constitute of plc control system , work principle , the hardware circuit design and control codes are introduced 第三章详细介绍了作为下位机的plc对于控制子节点的工作原理、系统组成、硬件电路设计以及控制代码的编写。
It also send control instructions to scms which collect information of system facilities . the core hardware facilities is dsp card which is produced by korea 下位机(单片机)采集功率放大器等系统设备的信息，并按照预定的算法执行现场控制。
Slave computer ( measurement and control unit ) and master computer ( monitoring and management unit ) are connected by serial communication for data exchanging 通过串行通信将下位机(测控单元)和上位机(监控管理单元)连接在一起，实现数据交换。
( 3 ) we designed the hardware circuit and programmed in supervise computer and slave computer respectively , which can control joint to act effectively ( 3 )设计了相应的硬件电路并分别在上位机和下位机上用软件编程，对关节的转动进行有效的控制。
