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RSView Supervisory Edition Installation Guide

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The tag name can be mixed case. Tag names preserve upper and lower<br />

case for readability but are not case sensitive. For example, the tag name<br />

MixerValve1 is the same as mixervalve1.<br />

In an expression, tag names that start with a number or contain a dash<br />

must be enclosed in brackets, for example, {N33-0}. Also use brackets<br />

with wildcard characters to represent multiple tags in an expression, for<br />

example, {alarm*}. For more information about using tags in<br />

expressions see Chapter 20, Creating expressions.<br />

Using folders to group HMI tags<br />

To organize tags, create a folder, and then include tags that are related<br />

to one another. To separate the folder name from the rest of the tag<br />

name, use a backslash (\). For example, tags in the folder called Pump<br />

would start with Pump\.<br />

For greater organization, you can nest folders. For example, if a plant<br />

is divided into zones, you can organize the tag database first by zone,<br />

then by machines in the zone, and finally by devices in each machine.<br />

The result might be Area1\Machine1\Pump.<br />

IMPORTANT<br />

For optimum performance, do not place all HMI tags in<br />

the root folder. It is also recommended that you limit the<br />

number of tags in a folder to less than 2000. HMI tags<br />

contained in nested folders do not contribute to the total<br />

number of tags in the root folder.<br />

For details about creating, duplicating and deleting folders, see Help.<br />

Viewing tag statistics<br />

The Tag Statistics dialog box provides a summary of how many tags an<br />

application uses, as well as other tag information such as the date the<br />

HMI tag database was last modified. To view tag statistics, the Tags<br />

editor must be open and have focus.<br />

9–4 <strong>RSView</strong> <strong>Supervisory</strong> <strong>Edition</strong> User’s <strong>Guide</strong>

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