National Instruments NI-FBUS - Manual (Page 32)

Chapter 2 Using the NI-FBUS Configurator
© National Instruments Corporation 2-9 NI-FBUS Configurator User Manual
To display the Parameter, Value, Type & Range, and Help columns, click
the Detailed View button. To return to displaying only the Parameter and
Value columns, click the Detailed View button again.
Editing Block Parameters
The default tab groupings in the block configuration window are by
functions. Parameters with a plus sign beside them are records or arrays
(structures) that contain more than one entry. To expand the record or array,
click the plus sign, or to collapse the structure, click the minus sign. The
sub-elements of a record are called fields.
The drop-down box for editing enumerated types on blocks is sized
according to the width of the Value column. You may need to resize the
Value column to view the entire entry in a drop-down box.
Chapter 4, Parameters , includes complete descriptions of the parameters
and their values.
To edit a block parameter value, complete the following steps:
1. Double-click in a function block to open the block configuration
window.
2. By default, records are expanded. If for some reason they are
collapsed, click the plus sign to see the values of the record or array
parameters.
3. Use the cursor to select the parameter value you want to change.
In many cases, you can select the desired setting from a drop-down
menu, or type in the new value. If a parameter value is grayed out,
it is read-only and you cannot change it. After you change a parameter
value, an asterisk (*) appears by the parameter name and the field turns
yellow.
4. To make your changes effective immediately, click the Write changes
button on the block configuration window toolbar. If the device accepts
the new setting, the asterisk and yellow color will clear. If the device
does not accept the new setting, you are probably trying to write a
setting that is invalid for your device. Refer to the help information for
that parameter or your device documentation to identify valid settings.
Tip If you decide that you do not want to write the changed value to the device, you can
undo your change to the block configuration window by reading the parameter value stored
in the device as described in the
Manually Update Block Parameters section.