csmstr - Omega Engineering

CONFIGURING THE MONOCHROME VIRTUAL HMI
PRIMITIVE DESCRIPTIONS
THE TIME AND DATE PRIMITIVE
The Time and Date primitive is used to display the current time and date, or to
display the contents of a time and date expression. It can also be used to edit such
an expression, or to set the Master’s real time clock.
The properties of a time and date primitive are displayed using two tabbed pages.
The first page is shown below…
• The Value property is used to indicate the time and date value to be displayed. If
no value is entered, the current time and date is shown. If an expression is
entered, it is taken to represent the number of seconds that have elapsed since 1 st
January 1997. Such values are typically obtained using the various time and date
functions described in the Function Reference.
• 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. If no
value property has been defined, this amounts to changing the current time or
date. If a value property has been entered, the expression entered must be
capable of being changed. For example, if a formula is entered, data entry will
not be permitted.
• The balance of the properties are as described for tag text primitives. (While it
may look odd to have Get Label and Flash On Alarm properties, remember that
the value property may be a tag, and so Crimson does have access to the tag
label and to the tag’s alarm state, should you decide to use them.)
REVISION 6 PAGE 145