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Download FactoryTalk View Machine Edition User's Guide
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to store the result of a calculation. temporarily, for example, a counter or index. to maintain information about the system’s current state, for example which graphic display was last displayed. For information about creating HMI memory tags, see Chapter 7. Steps for using HMI tags To use HMI tags, complete two basic steps: 1. In the Tags editor in FactoryTalk View, create a tag. HMI tags can be used as an internal storage location. Optionally you can map the tag name to an OPC tag or device address. For more information, see Chapter 7. 2. In graphic displays, alarm triggers, or anywhere else you want to use a tag’s value, assign the tag. At run time, the tag’s value is passed to the graphic display or alarm system. Browsing for tags You don’t have to remember the path and name of a tag to use it in your application. Whenever you need to use a tag, you can open the Tag Browser and select the tag to use. To open the Tag Browser In most editors, click the Browse button in the Tags column. In the Expression editor, position the cursor where you want to insert a tag name, and then click Tags. In the Parameters editor, double-click where you want to insert a tag name. 6-5 • • • • • 6 • Working with tags
