Specify a message I/O tag
- Last UpdatedSep 10, 2025
- 1 minute read
You can specify an I/O message tag options that specify the network address of remote processes. Its message properties are the same as a memory message tag.
Define memory and I/O message tag values
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Open the Tagname Dictionary and assign a name for a new tag.
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Select I/O Message as the type of tag from the Tag Types dialog box. The detail portion of the Tagname Dictionary dialog box appears.

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In the Maximum Length box, type the maximum number of characters allowed in the tag's message.
You can enter messages to a maximum of 131 characters.
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In the Initial Value box, type the text string that you want shown when WindowViewer starts the application.
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Save your changes to the tag.