Set up access names

You must associate InTouch I/O tags or remote tag references with an Access Name. An Access Name defines a communication link with another I/O data source. Each Access Name specifies an I/O address consisting of a node name, an application name, and a topic.

In a distributed application, I/O references can be set as global addresses to a network I/O Server, or local addresses to a local I/O Server.

InTouchView shows the visual interface of HMI applications designed specifically for use in an Application Server environment. InTouchView applications run as a client with Application Server acting as a server that provides most HMI functionality.

InTouchView applications offer only some of the standard functions available from full-featured InTouch applications. InTouchView applications cannot connect to I/O sources other than the Application Server Galaxy. You can only use the default Galaxy Access Name with your InTouchView application and cannot create Access Names.

Create an access name

1. On the Home menu, in the Tags group, select Access Names.

   The Access names dialog box appears.

2. Select Add.

   The Add access name dialog box appears.

   

3. Set the properties of the Add access name dialog box. Do the following:

   • In the Access name box, type a name that identifies this Access Name. The maximum character limit for an Access name is 16 characters.

   • If the data resides on a network I/O Server, type the remote server’s node name in the Node name box. The maximum character limit for a Node name is 71 characters.

   • In the Application name box, type the actual program name of the I/O Server program from which data will be acquired.

     If the I/O data source is a DAServer, type the name of the DAServer program, do not include the .exe file name extension of the program. The maximum character limit for an Application name is 100 characters.

   • In the Topic name box, type the topic name you want to access. The maximum character limit for a Topic name is 179 characters.

     The topic name is an application-specific sub-group of data elements. In the case of data coming from a DAServer program, the topic name is the same name configured for the topic in the DAServer program. When communicating with Microsoft Excel, the topic name must be the name assigned to the book and spreadsheet when it was saved. For example, [Book1]Sheet1.

   • Select the communication protocol to communicate with the I/O Server.

   • Select the option to poll information stored on the server.

     Option	Definition
     Advise all items	Polls for all data whether or not it is in visible windows, alarmed, logged, trended, or used in a script. Selecting this option affects performance, so its use is not recommended.
     Advise only active items	Polls for data shown in visible windows and data that is alarmed, logged, trended, or used in any script. Note: A button action script is not polled unless it appears in a visible window.

4. Select Enable Secondary Source if you want to select a secondary back up server, and enter the required details for the secondary source back up server.

5. When you are done specifying the Access Name, select Add.

   The new Access Name is added to the list.

6. Select Close.

For more information about setting up your secondary server for failover switching, see Use failover functionality with Access Names.