Rockwell-automation FactoryTalk ViewPoint Quick Start Guide User Manual download pdf (Page 33)

2 • SETTING UP SITE EDITION (SE) WEB APPLICATIONS

 [/DL], [/DR], [/DT], [/DB], used to dock displays to the left, right, top, or bottom

of the web browser window.

 [/Q1], [/Q2], [/Q3], [/Q4], used to set positions. /Q1: Upper right corner, /Q2:

Upper left corner, /Q3: Lower left corner, and /Q4: Lower right corner.

Equal (=) command

is used to enter an expression from the command line or

anywhere else a FactoryTalk View SE command is used.

The syntax for the Equal command is: [&] <tag_name>=<expression>

 [&] forces the command to be evaluated asynchronously, which can dramatically

improve the performance of tag writes.

 <tag_name> is a relative or absolute reference to the tag that stores the result of

the expression. The tag name can include an area name.

 <expression> is a value, string, tag name, or a more complex expression.

Ramp command

increases or decreases a tag value by a specified value or by

another tag's value.

The syntax for the Ramp command is Ramp [/V] <tag_name> <value|tag>

 [/V] performs a read immediately after the write to verify that the value was

actually altered in the programmable controller or OPC server. This parameter is

useful if the network is in poor condition or susceptible to noise interference. If

the verification fails, the error message is sent to the Factory Diagnostics system.

 <tag_name> is a relative or absolute reference to the tag that will be increased or

decreased in value.

 <value|tag> is an amount to add to or subtract from the current value of the

specified tag, as follows:

 A numeric value with a sign indicating add (+) or subtract (-).

 The value to add or subtract, as a percentage of the total min/max range, with

a sign indicating add (+) or subtract (-). The formula is:

new = old +/- (percentage/100 * (max - min)) plus (+) or minus (-) a tag

 If Ramp calculates a value that is outside of a tag's min/max range, it will

write the highest or lowest allowable value to programmable controller or

OPC server.

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Rockwell-automation FactoryTalk ViewPoint Quick Start Guide User Manual Page 33