利用串行通信实现计算机与PLC协同工作  

PC and PLC Cooperative Work Realization by Using Serial Communication

作　　者：张勇喜[1] 金秀[1] 张帆 胡雯雯[1] 杨文华[1] 任少鹏[1] ZHANG Yong-xi;JIN Xiu;ZHANG Fan;HU Wen-wen;YANG Wen-hua;REN Shao-peng(Shenyang Academy of Instrumentation Science Co.,Ltd.,Shenyang 110043,China)

机构地区：[1]沈阳仪表科学研究院有限公司,辽宁沈阳110043

出　　处：《仪表技术与传感器》2021年第6期55-57,共3页Instrument Technique and Sensor

摘　　要：为将现有的测试设备改造成自动测试设备,采用VB6设计了计算机测试系统和可编程控制器样品供给系统的协作控制程序。程序采用定时扫描的方式集中进行串行信号的输入与输出,避免了多点输出的互相干扰的问题。通过设置标志位的方式,实现了循环扫描时上升沿信号的判别以及数据信号的单次有效输出,确保了信息传输的可靠性。In order to realize the automation of existing test equipment,a collaborative control program was designed by using VB6,which can realize cooperative work of computer test system and programmable controller sample supply system.The program used the periodic scan method to centralize the input and output of serial signals,which avoided the interference of multipoint output.By setting the flag position,the program can realize the identification of the rising edge signal and the single effective output of the data signal during the cycle scan,to ensure the reliability of information transmission.

关 键 词：VB 可编程控制器 计算机 串行通讯 

分 类 号：TM383.6[电气工程—电机]