Baldor MIN1853 manual Arithmetic Operands and Equations, Boolean Operators, AO15=VOLTAGE + Error

Arithmetic Operands and Equations

Addition (+), subtraction (–), multiplication (*), and division (/) are easily performed. Expressions may only contain one operand. Complex equations require multiple statements. Variables and fixed point numbers may be mixed in arithmetic equations. All user arithmetic and variable storage uses 32 bit integer and fractional representation. The + and – symbols have a dedicated button on the keypad. Pressing the button will change between the two. The *, /, and = are accessed with the Alpha+0+ ... keystrokes.

Example:

(X)=(Y)*10

(AO15=(VOLTAGE) + (ERROR)

Examples of incorrect use:

(X)=1+2–3	This statement is incorrect because it has more than
	one operand.
(Length)=(Total)*0.3125	This statement is incorrect because it has more than
	four decimal places.

Instead, you should use:

(X)=1
(X)=(X)+2	or (X)+=2
(X)=(X)–3	or (X)–=3
and
(Length)=(Total)*3.125	Multiply the significant figures
(Length)=(Length)*.01	Then move the decimal place
or
(Length)=(Total)/32	32 bit storage of fractional decimal number

Boolean Operators

Boolean operators & and perform their respective bitwise Boolean functions on immediate or variable parameters. As an example, isolate a specific bit from an SD response to determine if axis #1 drive is enabled. This corresponds to a bit #5 (10000) Binary, (16) Integer in the SD response. The example program segment is written as follows:

(DRIVE STAT)=(SD1)&16 IF(DRIVE STAT)=16 MS,1“Drive Enabled” EB

The 16 corresponds to an integer weight of bit #5 (10000).

MN1853 Keypad Programming 6-29