Galil DMC-3425 user manual Logical operators, Multiple Conditional Statements

Logical operators:

OPERATOR	DESCRIPTION
<	less than
>	greater than
=	equal to
<=	less than or equal to
>=	greater than or equal to
<>	not equal

Conditional Statements

The conditional statement is satisfied if it evaluates to any value other than zero. The conditional statement can be any valid DMC-3425 numeric operand, including variables, array elements, numeric values, functions, keywords, and arithmetic expressions. If no conditional statement is given, the jump will always occur.

Number	V1=6
Numeric Expression	V1=V7*6
	@ABS[V1]>10
Array Element	V1<Count[2]
Variable	V1<V2
Internal Variable	_TPA=0
	_TVA>500
I/O	V1>@AN[2]
	@IN[1]=0

Multiple Conditional Statements

The DMC-3425 will accept multiple conditions in a single jump statement. The conditional statements are combined in pairs using the operands “&” and “”. The “&” operand between any two conditions, requires that both statements must be true for the combined statement to be true. The “” operand between any two conditions, requires that only one statement be true for the combined statement to be true.

NOTE: Each condition must be placed in parentheses for proper evaluation by the controller. In addition, the DMC-3425 executes operations from left to right. For further information on Mathematical Expressions and the bit-wise operators ‘&’ and ‘’, see pg. 1275.

Example using variables named V1, V2, V3 and V4:

JP #TEST, (V1<V2) & (V3<V4)

In this example, this statement will cause the program to jump to the label #TEST if V1 is less than V2 and V3 is less than V4. To illustrate this further, consider this same example with an additional condition:

JP #TEST, ((V1<V2) & (V3<V4)) (V5<V6)

This statement will cause the program to jump to the label #TEST under two conditions; 1. If V1 is less than V2 and V3 is less than V4. OR 2. If V5 is less than V6.

120 • Chapter 7 Application Programming DMC-3425