RSView Supervisory Edition Installation Guide

9 • CREATING HMI TAGS• • • • •2. On the Edit menu, click Delete, or on the toolbar, click the Delete button.Delete tags carefully. Once you click the Delete button, the tag is deleted. There is noconfirmation message, and you cannot undo the deletion.Specifying a data sourceThe following topics describe the Data Source fields. For details about setting up analog,digital, and string tag types, see Help.9 • PlaceholderSpecifying Device as the data sourceAn HMI tag with Device as its data source receives its data from a source external toRSView. The data can come from:• Allen-Bradley ® or SoftLogix 5 programmable controllers through RSLinx.• network devices through an OPC or DDE data server.• another Windows ® program through an OPC or DDE data server.For information about setting up OPC communications, see Chapter 7, Setting upcommunications.For details about creating HMI tags for use with DDE communications, see Appendix B,Setting up DDE communications for HMI tags.To create a tag with Device as the data source1. Click Device.2. In the Address box, specify the name of the tag in the data server, or specify the DDEitem. You can click the browse button to select the address of the data server tag.Addressing syntax for OPC tagsThe syntax for OPC tag addresses is:[AccessPath]Addressor::[AccessPath]Addresswhere :: is required for addresses that contain an initial colon (:).The square brackets are part of the syntax. They do not indicate optional parameters.9-7