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Realization of serial port communication between PLC and the host computer based on HostLink protocol

Shiping Zhao

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Abstract

The HostLink communication protocol of OMRON CS series PLC is introduced in this paper.The method for realizing the communication between PLC and the host computer is presented by means of c# and a control named SerialPort in Visual Studio 2005.The communacation procedure and program is also introduced in detail in the paper.This method ensures that the communication is real-time and accurate.Through reading and writing of the host computer from or to the PLC,automatic collection of field data is realized,and the device can be monitored and controlled effectively.The serial communication software is proved to be reliable and stable through the successful application in actual project.

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What this paper is about

The HostLink communication protocol of OMRON CS series PLC is introduced in this paper.The method for realizing the communication between PLC and the host computer is presented by means of c# and a control named SerialPort in Visual Studio 2005.The communacation procedure and program is also introduced in detail in the paper.This method ensures that the communication is real-time and accurate.Through reading and writing of the host computer from or to the PLC,automatic collection of field data is realized,and the device can be monitored and controlled effectively.The serial communication software is proved to be reliable and stable through the successful application in actual project.

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Available abstract

The HostLink communication protocol of OMRON CS series PLC is introduced in this paper.The method for realizing the communication between PLC and the host computer is presented by means of c# and a control named SerialPort in Visual Studio 2005.The communacation procedure and program is also introduced in detail in the paper.This method ensures that the communication is real-time and accurate.Through reading and writing of the host computer from or to the PLC,automatic collection of field data is realized,and the device can be monitored and controlled effectively.The serial communication software is proved to be reliable and stable through the successful application in actual project.

Key concepts: Computer science, Serial communication, Host (biology), Serial port, Protocol (science), Realization (probability), Communications protocol, Software

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