摘要
详细说明了西门子S7-200 PLC在自由口模式下与上位机通信的实现,主要包括该系统的硬件构成,自由口通信协议的标准,以及上位机软件流程和主控PLC软件设计。通过自由口通信可实现对ITER导体穿缆测力测长系统的监控,将PLC数据传送至上位机,实现对数据的处理以及现场数据的实时显示和远程控制等功能。
The communication between the Siemens S7-200 PLC and the host computer under the free-port mode is illuminated in detail. The system hardware configuration and the standard free port communication protocols are included and the software program designing method for host PC and main PLC are also given. This communication is applied to monitor the force and length measurement system for ITER conductor insertion and transport data from PLC to the host computer and also realize the function of data processing, real-time display of on-site data, long distance control and so on.
出处
《微型机与应用》
2011年第13期42-44,共3页
Microcomputer & Its Applications
基金
国家ITER计划(2008GB101000)
关键词
PLC
通信协议
自由口模式
ITER导体穿缆测力测长系统
上位机
PLC
communication protocol
free-port mode
force and length measurement system for ITER conductor insertion
host computer
