Vigilant User Manual
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its error status and some internal variables (timers, speed change, load change, etc.). By selecting one
of the items of the list the corresponding variable will be inserted automatically on the expression field,
helping in that way with the writing of the expression.
The editor also provides a pull-down menu with all the logical and arithmetic operators that can be
included on the expression. By selecting one of the items of this list the corresponding operator will
be inserted automatically on the expression field.
The system checks automatically if the syntax of the expression is correct. In case they are not the
editor will show an "
Invalid Expression”
message.
The following table shows the list variables available on the Expression Editor. In this table the text in
cursive point_tag, param_tag and Pulse_train_point must be substituted by the tags of the
corresponding points and parameters. These texts must be written always surrounded by double
quotes on the expressions. The following lines show examples for Point_tag:alarm,
Point_tag:param_tag:alarm and Point_tag:param_tag:value.
