Watlow LogicPro - Manual (Page 92)

Chapter 7: Sequential Function Charts LogicPro User’s Guide
76 Watlow Anafaze Doc.# 28002-00 Rev 3.00
Assigning Variables to Transitions
Transition conditions must take the form of a single
expression. A Transition condition can be a variable that
allows the program to continue once the variable value is
greater than 0. It could also be one or more variables related
by Boolean operators resulting in a Boolean true or false
result. Any integer value greater than 0 is considered true.
The following list of operators, shown in Table 7.2, may be
used in the Transition condition expression:
Table 7.2 Transition Condition Expressions
To assign a logical condition to a Transition:
1. Select the [Selector] tool.
2. Double-click on the Transition to which you want to
assign a condition. The
Transition Condition dialog
box appears.
3. Select a variable for the transition by selecting the
appropriate checkbox and double-clicking the variable
name in the list.
4. If the condition expression needs an operator, press the
Operator List button on the dialog box. Add the
operator by double-clicking it.
Operator Symbol Function
* Times
/ Divided By
+ Plus
- Minus
>= Greater Than or Equal To
> Greater Than
<= Less Than or Equal To
< Less Than
== Equals
!= Not Equal To
! Not
&& And
|| Or
&&! And Not
||! Or not
( Left Parenthesis
) Right Parentheses