Metrohm 730 Sample Changer - Manuel (Page 97)

4.4 Changer Commands
730 Sample Changer, Detailed Description 94
4 4.4 .4 Changer Changer Commands Commands
4.4.1 Command Command Reference Reference
The following commands are programmable within a sequence.
Most of them are also available in manual operation but may vary
partially in their operation or exhibit a limited parameter selection;
see page 46ff.
The following listing is valid for the programming of process se-
quences.
SAMPLE
7
SAMPLE >start sequence
1 SAMPLE: = 1
=,+,– 1…999
Define first sample
The SAMPLE command can determine which rack position is to
be the position of the first sample (SAMPLE = X). This is stored as
a index variable. It may be modified for example, in a sample se-
quence (SAMPLE + X or SAMPLE – X), in order to control the
course of a sample series during processing.
The SAMPLE command does not have to be used for simple
applications. As a general rule the first sample of a series is as-
sumed to be in rack position 1 unless specified otherwise. There-
fore it is recommended not to place the special beakers in the first
rack positions; place them in the highest positions instead.
Before starting a sample series, the position of the first sample
can be defined with the <SAMPLE> key in manual operation, as
long as this has not been defined in the method itself.
If a certain sample beaker order is needed for each application of
a method, the position of the first sample can be defined in the
start sequence with 'SAMPLE = X' and this setting can be saved
with the corresponding method.
If the SAMPLE command is not executed during a sample se-
quence, the SAMPLE variable will be increased by 1 after every
processing of the sample sequence.