Galil DMC-2X00 user manual Command Format JP and JS, Logical operators, Conditional Statements

Command Format - JP and JS

FORMAT:	DESCRIPTION
JS destination, logical condition	Jump to subroutine if logical condition is satisfied
JP destination, logical condition	Jump to location if logical condition is satisfied

The destination is a program line number or label where the program sequencer will jump if the specified condition is satisfied. Note that the line number of the first line of program memory is 0. The comma designates "IF". The logical condition tests two operands with logical operators.

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-2x00 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-2x00 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-2x00 executes operations from left to right. For further information on Mathematical Expressions and the bit-wise operators ‘&’ and ‘’, see pg 97.

For example, using variables named V1, V2, V3 and V4: JP #TEST, (V1<V2) & (V3<V4)

88 • Chapter 7 Application Programming DMC-2X00