InTouch是本系統(tǒng)中有信息交互的中樞，航班信息和報(bào)文信息都是通過InTouch發(fā)送給下位控制機(jī)PLC的。InTouch是由wonderware公司開發(fā)的面向工業(yè)控制的人—機(jī)對(duì)話界面（HMI）開發(fā)工具，提供了組態(tài)環(huán)境WindowMaker和運(yùn)行環(huán)境WindowViewer。在組態(tài)環(huán)境下定制系統(tǒng)，進(jìn)行數(shù)據(jù)庫組態(tài)，畫面組態(tài)，定義系統(tǒng)的數(shù)據(jù)采集和控制任務(wù)。在運(yùn)行環(huán)境中通過執(zhí)行 InTouch Quickscripts來實(shí)施這些任務(wù)，進(jìn)行報(bào)警和行歷史數(shù)據(jù)的記錄和報(bào)告，并將數(shù)據(jù)實(shí)時(shí)傳輸給本站的其它任務(wù)和網(wǎng)上其它工作站。InTouch7.0支持動(dòng)態(tài)數(shù)據(jù)交換(DDE)，能夠用作 DDE 和 Suitelink 通訊協(xié)議的客戶和服務(wù)器。通過DDE和Suitelink，InTouch7.0能與其他 Windows 程序、Wonderware I/O 服務(wù)器和第三方 I/O 服務(wù)器程序?qū)崿F(xiàn)通訊。本系統(tǒng)使用Wonderware的以太網(wǎng)（EtherNet）通訊協(xié)議服務(wù)器ABTCP，實(shí)現(xiàn)INTOUCH與下位PLC通訊。

　　與DDE命名規(guī)則一致，InTouch通過一個(gè)三部分命名約定來標(biāo)志在I/O服務(wù)器程序中的數(shù)據(jù)元素，包括VIEW(應(yīng)用程序名)，TAGNAME(主題名）和ActualTagname （項(xiàng)目名）。為了從另一個(gè)應(yīng)用程序中得到數(shù)據(jù)，客戶機(jī)程序(InTouch)通過這三項(xiàng)打開到服務(wù)器程序的一個(gè)通道。此外，它必須知道提供該數(shù)據(jù)值的應(yīng)用程序名，應(yīng)用程序中包含該數(shù)據(jù)值的主題名和項(xiàng)目名。當(dāng)另一Windows應(yīng)用程序從InTouch中請(qǐng)求一個(gè)數(shù)據(jù)值時(shí)，它也必須知道這三個(gè)I/O地址項(xiàng)。I/O類型標(biāo)記名必須與一個(gè)訪問名相聯(lián)系，訪問名包含了用來與其他I/O數(shù)據(jù)源通訊的信息，這些信息包括節(jié)點(diǎn)名，應(yīng)用程序名和主題名。InTouch is the information exchange center in the system. Flight information and message information are sent to the lower control computer PLC through InTouch. InTouch is a man-machine interface (HMI) development tool for industrial control developed by Wonderware company. It provides the configuration environment windowmaker and the running environment windowviewer. Customize the system in the configuration environment, configure the database and screen, and define the data acquisition and control tasks of the system. Implement these tasks by executing InTouch quickscripts in the operating environment, record and report alarm and line historical data, and transmit the data to other tasks in the station and other workstations on the network in real time. Intouch7.0 supports dynamic data exchange (DDE) and can be used as a client and server for DDE and suitelink communication protocols. Through DDE and suitelink, intouch7.0 can communicate with other windows programs, Wonderware i/o servers, and third-party i/o server programs. This system uses Wonderware's Ethernet communication protocol server abtcp to realize the communication between InTouch and lower PLC.
Consistent with DDE naming rules, InTouch uses a three part naming convention to identify data elements in i/o server programs, including view (application name), tagName (topic name), and actualtagname (project name). In order to get data from another application, the client program (InTouch) opens a channel to the server program through these three items. In addition, it must know the name of the application that provided the data value, and the application contains the subject name and project name of the data value. When another windows application requests a data value from InTouch, it must also know the three i/o address entries. An i/o type tagName must be associated with an access name that contains information used to communicate with other i/o data sources, including the node name, application name, and topic name.