csmstr - Omega Engineering

CONFIGURING THE MONOCHROME VIRTUAL HMI
PRIMITIVE DESCRIPTIONS
The first page is more-or-less the same for all five primitive types…
• The Value property is used to indicate from where the data for this primitive
should be obtained. You may select a tag, a register in a communications device,
or an expression that combines a number of such items. The data type of the item
must be appropriate to the primitive in question eg. the Value property for an
integer text primitive cannot be set equal to a string expression.
• The Data Entry property is used to indicate whether or not you want the user of
the virtual HMI to be able to change the underlying value via this primitive. For
data entry to be enabled, the expression entered for the value property must be
capable of being changed. For example, if a formula is entered, data entry will
not be permitted.
• The Show Label property is used to indicate whether or not you want the
primitive to include a label to identify the data being displayed. If this property is
set to yes, the label will be left-justified within the primitive’s bounding
rectangle, while the data itself will be right-justified. If this property is set to no,
the Horizontal Justification property will be used to locate the data within the
field. Note that this property can be edited via the Field Label commands on the
Format menu. When no primitive is selected, these commands can also be used
to set the default value for newly-created primitives.
• The Get Label property is used to indicate from where the label text should be
obtained. The options presented depend on what was entered for the value
property. If a tag has been selected, you will be given the option of using the
tag’s default label, or entering a new label on the Format tab of the dialog box. If
something else has been selected, you will only have the second option.
• The Get Format property is used to indicate from where the formatting
information for this primitive should be obtained. The options presented depend
on what was entered for the value property. If a tag of the correct data type has
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