Metrohm tiamo 1.1 Manual - Manual (Page 601)

Commands 573
Comparison . If this answer is not received within the Timeout defined in the
command the command is cancelled.
Poll
The character string defined in Command (optional) will be sent to the de-
vice. The answer of the device is expected within the Timeout defined for
the device settings and evaluated. This action will be repeated until the an-
swer of the device is identical to the regular expression in
Comparison . If this
answer is not received within the Timeout defined in the command the
command is cancelled.
Command
250 characters, [ 'empty' ]
Character string to be sent to the device.
Note
All ASCII characters can be entered with its two-digit hex code after backslash
(e.g.
\1B = Escape ).
Variable
Method variables
Selection of an existing method variable. The received data for the Actions
Read , Wait for and Poll will be saved in this method variable which must be
defined in the START command and is not allowed to be assigned to a sys-
tem variable.
Note
It is possible to create several indexed variables (e.g. Input1 , Input2 , …) to save
the character substrings produced by regular expressions into the different vari-
ables.
Example
Variable = MV.Input1
Comparison = (\d+\.\d+),(\d+\.\d+)
Two measured values separated by a semicolon are filtered out of the received
character string and saved in the two variables
MV.Input1 and MV.Input2 .
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).