You can specify the settings when [Enhanced Processing] is selected in the [Operation Process] tab.
Conditional Expressions
The result of the defined expression appears in the Data Display. Click the icon 
to open the [Numeric Expression] dialog box where you can set the expression.
Numeric Expression
If an operation produces a divide-by-zero or BCD conversion error, the result of the operation is undefined. The error code is stored in the system variable #H_Expression_Err_Status.
A.2.2.2 Word Type - #H System Variables
Trigger
Select from the following, the condition that executes the [Expression].
Continuous Action
Always executes the set expression.
While Bit is ON
While the [Bit Address] is ON, executes the set expression. While the [Bit Address] is OFF, the expression is not executed and displays the value of the [Monitor Word Address] specified in the [Basic] tab.
Bit Address
When the [Trigger] is set to [While Bit is ON], define the trigger address.
Conditional Expressions
Define the expression. You cannot type the expression.
Click to select a value.
Type
Select the type of conditional expression: [Word Address] or [Constant].
Word Address
Sets up word addresses in the expression.
Constant
Specify a value between 0 and 4294967295.
Data Type
Select the data type. If you set [Type] = [Constant], select [Dec], [Hex] or [Oct]. This property does not display if you set [Type] = [Word Address]. The [Data Type] setting in the [Basic] tab is applied.
Operator
If you have added an address or a value to the expression using [Copy] or [Add], select an operator from [+], [-], [/], [*], [&], [|], [^], [%], [<<], and [>>].
Unary Op.
Select an Unary operator from [-], [~], and [None].
Address/Constant
Specify an address if the [Type] is [Word Address], or a value if the [Type] is [Constant].
Expand
Enlarges the script Expression area.
Removes parentheses set up with 
.
Adds parentheses around the selected portion of the expression.
Moves the selected portion to the left side of the operator.
Moves the selected portion to the right side of the operator.
Select Expression
Selects the entire expression.
Copy
Copies and adds the selected expression.
Add
Adds a part of the expression.
Delete
Removes a portion of the expression. You cannot select and delete the entire expression. If the expression contains a comparison, you cannot delete any part of the expression.