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Extract sub-string from right (right), C.7.4 extract sub-string from right (right) – Nematron Pointe Controller User Manual

Page 413

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Pointe Controller User Guide

Appendix C: Ladder Diagram Block Reference

411

Configuration Reference

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

Param

Name

Config

Var Type

Description

EN

Enable

no

-

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

ENO

Enable
Out

no

-

The state of the rung (off/on)
passed to the right.

IN

Input
String

req

String

Literal

The input string. Literals must be
enclosed in single quotes (‘ ’).

LEN

Length

req

unsigned*

Numeric

The length (i.e., the number of
characters) of the sub-string to be
extracted.

OUT

Output
String

req

String

The result of extracting the sub-
string. The output is always NULL-
terminated.

* Any unsigned (UB, UW, UD) Input, Output, or Memory tag. For more information, see “

Defining

Input, Output, Memory tags

” on page 114

.

NOTE: If the configured length of the string variable assigned to OUT is smaller
than the result of the function, then the result is truncated to fit. No overflow
error is generated.

C.7.4 Extract sub-string from right (RIGHT)

When used in a Ladder Diagram, the RIGHT block extracts a sub-string of
specified length from the right end of a string (variable or literal) and sends the
result to an output.

Select the

tool (from the

String 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.