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KR950025543A - Interface method of PLC monitoring device - Google Patents

Interface method of PLC monitoring device Download PDF

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Publication number
KR950025543A
KR950025543A KR1019940003355A KR19940003355A KR950025543A KR 950025543 A KR950025543 A KR 950025543A KR 1019940003355 A KR1019940003355 A KR 1019940003355A KR 19940003355 A KR19940003355 A KR 19940003355A KR 950025543 A KR950025543 A KR 950025543A
Authority
KR
South Korea
Prior art keywords
communication
output port
communication method
input
monitoring
Prior art date
Application number
KR1019940003355A
Other languages
Korean (ko)
Inventor
노종하
Original Assignee
백중영
금성계전 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 백중영, 금성계전 주식회사 filed Critical 백중영
Priority to KR1019940003355A priority Critical patent/KR950025543A/en
Publication of KR950025543A publication Critical patent/KR950025543A/en

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Abstract

본 발명은 피엘씨 모니터링장치의 인터페이스방법에 관한 것으로, 종래 피엘씨 모니터링장치의 인터페이스 방법은 모니터링버퍼에서 지원해 주는 통신방식중 한가지만을 선택하여 통신함으로써 모니터링장치와 외부기기와의 시스템 구성시 외부기기와의 통신을 전부 선택된 통신방식으로 바꾸어 통신을 해야 함으로 모니터링징치와 인터페이스시 다양한 시스템구성에 한계가 있고, 외부기기와 통신해야할 데이타가 많을때는 통신상에 어려움이 있는 문제점이 있있다.The present invention relates to an interface method of a PLC monitoring apparatus, and the interface method of a conventional PLC monitoring apparatus selects and communicates only one communication method supported by a monitoring buffer to communicate with an external device when configuring a system between the monitoring apparatus and an external device. Since the communication of all communication must be changed to the selected communication method, there are limitations in various system configurations when monitoring and interface, and there is a problem in communication when there is a lot of data to communicate with external devices.

본 발명은 이러한 문제점을 해결하기 위하여 보조통신인 병렬 통신입/출력포트에 보조모니터링버퍼를 연결하여 주 통신방법에 의한 통신이 입／출력포트를 통한 병렬통신방법이 아닐 경우 보조모니터링버퍼에 의해 입／출력포트로 외부기기와 통신을 수행하도록 하는 피엘씨(PLC) 모니터링장치의 인터페이스방법을 제공하는 것이다.In order to solve this problem, the present invention connects the auxiliary monitoring buffer to the parallel communication input / output port, which is auxiliary communication, and inputs the auxiliary monitoring buffer when the communication by the main communication method is not the parallel communication method through the input / output port. It provides an interface method of a PLC monitoring device that communicates with an external device through an output port.

Description

피엘씨 모니터링장치의 인터페이스 방법Interface method of PLC monitoring device

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제3도는 본 발명 피엘씨 모니터링장치의 인터페이스 블럭도.Figure 3 is a block diagram of the interface of the present invention PRC monitoring device.

Claims (1)

통신방식이 선택되면 선택된 통신방식이 입/출력포트를 통한 병렬통신방식인지를 판단하는 제1단계와, 상기 데1단계에서 입/출력포트를 통한 병렬통신방식이면 선택된 통신방식으로 외부기기와 통신하여 통신데이타를 주모니터링버퍼에 라이트(write)하는 제2단계와, 상기 제1단계에서 입/출력포트를 통한 병렬통신방식이 아니면 입/출력포트로 외부기기의 접점상태를 통신하여 통신데이타를 보조모니터링버퍼에 라이트하는 제3단계와, 상기 제2, 제3단계에서 라이트된 통신데이타에 대응되는 운전을 수행하는 제4단계로 이루어지는 것을 특징으로 하는 피엘씨 모니터링장치의 인터페이스 방법.When the communication method is selected, the first step of determining whether the selected communication method is a parallel communication method through the input / output port, and if the parallel communication method through the input / output port in the step 1, communication with the external device in the selected communication method Writes the communication data to the main monitoring buffer, and communicates the contact state of the external device with the input / output port through the input / output port, unless the parallel communication method is used through the input / output port in the first step. And a fourth step of writing to the auxiliary monitoring buffer, and a fourth step of performing an operation corresponding to the communication data written in the second and third steps. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940003355A 1994-02-24 1994-02-24 Interface method of PLC monitoring device KR950025543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1019940003355A KR950025543A (en) 1994-02-24 1994-02-24 Interface method of PLC monitoring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940003355A KR950025543A (en) 1994-02-24 1994-02-24 Interface method of PLC monitoring device

Publications (1)

Publication Number Publication Date
KR950025543A true KR950025543A (en) 1995-09-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940003355A KR950025543A (en) 1994-02-24 1994-02-24 Interface method of PLC monitoring device

Country Status (1)

Country Link
KR (1) KR950025543A (en)

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