Datalogic PowerScan M8500, Product Reference Manual

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Product Reference Guide 209
Appendix C
Programming for Expert Users
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:
•
<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:

$+ELB1}#DS^C$-.
Function Description
All the functions and conventions to be used within the formatting expressions are listed
below:
FUNCTION NAME DESCRIPTION
FSTR Searches for a defined substring by its starting and ending string.
FLSTR Searches for a defined substring by its starting string and its length.
SSTR Extracts a defined substring from the original string.
FPOS Searches for a position of a defined substring within the original string.
LSTR Returns a string length.
ISTR Insert a substring in the original string.
RSTR
Substitutes a defined substring contained in the original string with a
new one.