1、附录 A 外文原文 Configure communication 1. Configure communication Introduction This chapter contains information on configuring the communication between WinCC and an automation system. This chapter also describes how you create and scale tags. General procedure Use the editor Tag management to configure
2、 the communication. You will need at least the following components to configure the communication: One channel with channel units One connection One process tag In practice, you will achieve access to the current process values of the automation system by the configured communication.You do not nee
3、d an automation system for the Quick_Start project. In this project, the values are transported via an internal tag within WinCC.The configuration of the communication between WinCC and the automation system as well as the linear scaling of the process tags are only intended as exercises for practic
4、e. 2.Check the channels and connections in WinCC Introduction Via the channels and connections you will determine clearly, how the automation system isconnected to WinCC. The channels The channels are specialized communication drivers. The channels allow the supply ofprocess values from the automati
5、on system to the process tags. WinCC provides a variety ofchannels to connect different automation systems. In WinCC, you can also use channels, via which values are transferred to the automationsystem from WinCC. You will control the process via these channels. The channel units The channels have d
6、ifferent channel units for the different communication networks. Thischannel unit is then used to access to a certain type of automation system. A channel unitserves as an interface with exactly one underlying hardware driver and therefore to exactlyone communication processor in the computer. The c
7、onnections In channel units, you will configure connections to the various automation systems. Eachconnection describes the interface to an individual, defined automation system. The dataexchange will take place via the connections in Runtime. 3. Tags in WinCC Introduction The tags in WinCC represen
8、t either real values or internal values. The internal values arecalculated or simulated within WinCC. WinCC manages all tags in the Tagmanagementeditor. Process Tags The connecting link for the exchange of data between WinCC and the automationsystemsare the external tags. Each external tag in WinCC
9、corresponds to a certain process value inthe memory of one of the connected automation systems. External tags are thereforereferred to as process tags. In Runtime, the process values of the process tags are determined and entered by WinCC. In WinCC, you can also determine the values for the process
10、tags. These values aretransferred to the automation system via the stipulated channel. The automation systemcontrols the process accordingly. Internal Tags WinCC also has internal variables. These tags do not have a process link and only carryvalues within WinCC. Tag groups The tag groups are compon
11、ents of the Tag management editor. The tag groups are usedto organize tags clearly. 4.Adding a Channel Introduction The following steps will show you how to create a channel in WinCC. WinCC communicationwith the automation system via this channel. This also supplies process values to theprocess tags
12、 in WinCC. Requirement The Quick_Start project is open. Procedure 1.Open the Add new driver dialog to add a channel: 2.Select the channel SIMATIC S7 Protocol Suite.chn:You have added the SIMATIC S7 Protocol Suite channel and it will be displayed in WinCCExplorer. The SIMATIC S7 Protocol Suite channe
13、l has several channel units for thedifferent communication networks. You will use the channel unit MPI in the GettingStarted project. You will create a connection to the automation system in the next steps under the channelunit MPI. 5.Creating connections Introduction The following steps will show y
14、ou how to create a connection to the automation systemunder the channel unit MPI. The data exchange will take place via this connection inRuntime. Requirement The channel SIMATIC S7 Protocol Suite is integrated in WinCC Explorer. Procedure 1. Create a new connection under the channel unit MPI: 2. Enter the SPS_1 as the name for the connection: You have established the connection SPS_1 to the automation system. The
