PI系统应用培训教程分析.ppt

All rights reserved, OSIsoft Inc. ? 2004 Dynamic Values A value is shown as a number or a digital state string. The tag name and timestamp may also be shown. All rights reserved, OSIsoft Inc. ? 2004 Multi-State Objects A Multi-State symbol is one that changes color to reflect changes in value for a particular tag. Any object except a trend, bitmap, button, or OLE object can be made a MultiState symbol by assigning a tag to it. You determine the number of value ranges, and the colors assigned to each range. As the value of the tag changes, the MultiState symbol changes color to reflect the current value. You can make a symbol seem to disappear by setting a state color to the background color or to a color of none. For alarms or other purposes, you can set a state color to blink. After you have drawn a symbol or copied one from the Symbol Library, select it with the Build Mode pointer. Select Multi-State from the Edit menu or click the Multi-State Symbol button. The Multi-State Symbol dialog box is displayed. In the Tag Name text box, type the name of the tag you want to assign to the symbol. orClick the Tag Search button to use the Tag Search feature. Select the number of states for the symbol. If the number of states is not entered, the number defaults to 2. For digital tags, the number of states is automatically set to the number of defined states for that tag. If desired, select a color that will be used when the information is bad from the COLOR FOR BAD DATA drop-down list. In the State text box, choose State 1. In the adjacent Values text boxes, a range of values for this state is displayed. The total range of the tag is automatically divided by the number of states. If desired, you may change the range for this state by typing new values. You can also click the Blink checkbox to make the color blink. For digital tags, the state name is shown in these boxes. Select the color that will be used for the state from the COLOR drop-down list. Repeat Steps 5,6,