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Parameters definition, Calculation parameter example – MTS Series 793 User Manual

Page 358

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Note:

The Calculation Parameters panel requires the Configuration access level.

Warning:

Small calculation parameter changes can produce large control-loop changes, resulting in violent
actuator movement.

Violent actuator movement can result in injury and equipment damage.

Use care when changing calculation parameters.

Parameters Definition

Parameters Definition Panel

Description

Item

This name entered here appears in formulas, in the Station Setup window’s
Calculation Parameters panel, and in the Channel Option window’s Signal
Lists.

Display name

Identifies the calculation parameter for internal purposes. Typically, this name
is not changed.

Internal name

Selects the calculation parameter’s dimension. This selection affects available
Current Value selections.

Dimension

Sets a range in which the calculation parameter value can be changed.

Range

Sets the access level required to change the Current Value.

Access Level

Sets the current calculation parameter value. Calculation parameter values
are changed here and in the Station Setup window’s Calculation Parameters
tab.

Current Value

Adds a new parameter to the list.

Add

Removes the selected parameter from the list.

Delete

Calculation Parameter Example

In this example, suppose you want to create several calculations that require the radius of the test fixture. To
do this, you could create a new calculation parameter, label it “Radius,” and enter the value of the test fixture
radius. The application writes that value wherever you use the “Radius” calculation parameter.

If you need to change the radius of the test fixture, you simply make an equivalent change to the value of the
calculation parameter. This simultaneously updates all calculations that include the “Radius” parameter.

1. Create a Calculation Parameter by pressing the Add button. In this example, the Calculation Parameter

is named “Radius.”

358 MTS Series 793 Control Software

Calculated Signals