Programming For Expert Users; Function Description - Datalogic PowerScan M8500 Product Reference Manual

This document is addressed to expert users who are familiar with software programming
languages and want to define a personalized code formatting. The provided programming
language allows creating either simple or complex formatting expressions by means of the
basic functions connected together through the following operators: (, ), -, +.
The syntax to be used to transmit the expressions to the PowerScan® M8500 is the
following:
$+ELB<n>formatting expression<ETX>$-
where:
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•
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Function Description

All the functions and conventions to be used within the formatting expressions are listed
below:
FUNCTION NAME
FSTR
FLSTR
SSTR
FPOS
LSTR
ISTR
RSTR
Product Reference Guide

Programming for Expert Users

<n>
is a number in the range 1-5 corresponding to the format to be defined;
<ETX>
is the conventional character used as terminator of the command;
the formatting expression uses ASCII characters when containing text strings. For this
reason, the string must be inserted between two quotation marks. The following
example shows the ASCII conversion of the "ABC" string:
$+ELB1}414243+#DS^C$-.
DESCRIPTION
Searches for a defined substring by its starting and ending string.
Searches for a defined substring by its starting string and its length.
Extracts a defined substring from the original string.
Searches for a position of a defined substring within the original string.
Returns a string length.
Insert a substring in the original string.
Substitutes a defined substring contained in the original string with a
new one.
Appendix C
209