Less than (lt), C.4.6 less than (lt) – Nematron Pointe Controller User Manual

Page 389

Pointe Controller User Guide

Appendix C: Ladder Diagram Block Reference

387

Configuration Reference

The parameters of this block are described in the following table:

Param

Name

Config

Var Type

Description

Enable

The state of the rung (off/on)
received from the left.

Output

The result — false or true — of
comparing the two input values.
The result becomes the state of the
rung (off/on) passed to the right.

IN1

Input
Value 1

req

any Input

any Output

any Memory

T_DONE

T_VALUE

T_PREVAL

The first input value. The function
checks to see if this value is less
than or equal to the second input
value.

IN2

Input
Value 2

req

any Input

any Output

any Memory

T_DONE

T_VALUE

T_PREVAL

Numeric

The second input value.

C.4.6 Less Than (LT)

When used in a Ladder Diagram, the LT block checks to see if one input is less
than another and uses the result — false or true — to set the output rung state.

Select the

tool (from the

Comparison Blocks

toolbar) and click on a ladder

rung to insert the following block:

Once the block is inserted, you can double-click on it to

configure

it.

Functional Description

When EN becomes on, the block function is executed: the Input Value 1 (IN1) is
compared with the Input Value 2 (IN2) and the result is placed in the Output (Q).

If IN1 is less than IN2, then “true is placed in Q. If IN1 is not less than IN2, then
“false is placed in Q.