GE 90-30/20/Micro manual Expanded Description, Function Description

4

Parameters:

Parameter

Description

enable	When the function is enabled, the operation is performed.
I1	I1 contains a constant or reference for the first value to be compared.
	(I1 is on the left side of the relational equation, as in I1 < I2).
I2	I2 contains a constant or reference for the second value to be compared.
	(I2 is on the right side of the relational equation, as in I1 < I2).
Q	Output Q is energized when I1 and I2 match the specified relation.

Note

I1 and I2 must be valid numbers, i.e., cannot be NaN (Not a Number).

Expanded Description:

Function

Description

Equal

When enabled, if the value at input I1 is equal to the value at input I2, output Q is

energized.

Not Equal

When enabled, if the value at input I1 is NOT equal to the value at input I2, output Q is

energized.

Greater Than

When enabled, if the value at input I1 is greater than the value at input I2, output Q is

energized.

Greater Than

When enabled, if the value at input I1 is greater than or equal to the value at input I2,

or Equal

output Q is energized.

Less Than

When enabled, if the value at input I1 is less than the value at input I2, output Q is

energized.

Less Than

When enabled, if the value at input I1 is less than or equal to the value at input I2, output

or Equal

Q is energized.

Valid Memory Types:

Parameter

flow

%I

%Q

%M

%T

%S

%G

%R

%AI

%AQ

const

none

enable

•

I1

o

o

o

o

o

•

•

•

•†

I2

o

o

o

o

o

•

•

•

•†

Q

•

•

•Valid reference or place where power may flow through the function. o Valid reference for INT data only; not valid for DINT or REAL.

† Constants are limited to integer values for double precision signed integer operations.

4-42 Series 90-30/20/Micro Programmable Controllers Reference Manual–September 1998 GFK-0467K