Metrohm tiamo 1.0 Manual - Manual (Page 526)

502 Method
Comparison
100 characters, [ 'empty' ]
Entry of a character string which should be compared to the data received
by one of the Actions Read , Wait for a nd Poll . In this field so-called Regular
Expressions can be entered. You can use these exactly defined search
patterns to interpret the received character strings and save contents from
this strings in a method variable. Regular Expressions are widely used in
computer science (operating systems UNIX or LINUX, s script languages
PERL, etc.) and are standardized to a great extent. In tiamo Extended
Regular Expressions according to Java 2 Platform SE v1.4.2 can be
use (details see e.g. http://en.wikipedia.org/wiki/Regular_expression).
Examples for Regular Expressions:
Expression Meaning Example
[abc] OR function for single characters receive a or b or c
[a-z0-9] character in the specified range m or 5
(hallo) substring string contains hallo
^hallo start of line hallo is at start of line
hallo$ end of line hallo is at end of line
. any single character a or 4 or – or ...
\. point .
\d one digit 3
\d+ several digits 324567
\d{4} four digits 3143
\D not one digit A or ! or ...
\w a digit or a letter a or 3
\W neither digit nor letter ! or .
.* any character string abcd or 41 or –$=$ or ...
Any combination of regular expressions is possible.
Note
In order to save the received data in a variable open and close brackets must be
set in the field
Comparison anyway. Therefore, to save a complete character
string in a variable the expression (.*) must be entered in the field Comparison .