Metrohm 748 DH Sample Changer - Handbuch (Seite 12)

3.1 General rules
748 DH Sample Changer
11
3 Operation via RS232 Interface
3.1 General rules
The DH Sample Changer has a remote control facility that allows its control
via TiNet. The parameters of the Sample Changer may be easily set by the
method editor of TiNet.
The following description offers special possibilities of low level control via the
transfer command of the calculation block of the TiNet method editor.
3.1.1 Tree of commands
The commands are hierarchically ordered with the following rules:
Rules Example
The root of the tree is designated by &.
The branches (levels) of a tree are marked with
a dot (.) when calling up an object.
Upper- or lowercase letters may be used. &STIRER.ON or &Stirer.On
An object can be assigned a value. Values are
marked at the beginning and end by quotes (").
They may contain ASCII characters or numerical
values.
&Stirer.On"True"
&Init.SpeedXY"3"
The current object remains valid until a new
object is called.
New objects can be addressed relative to the
old object:
A preceding dot leads forwards to the next level
in the tree.
More than one preceding dot leads one (or
several) level(s) backwards in the tree. n node
backwards require n+1 preceding dots.
&Stirer.On"True";..$G
Leads back from nod &Stirer.On to nod &Stirer
If you want to jump back to the root, enter a
preceding &.
3.1.2 Triggers
$G Go Commands are executed with $G.
Example:
&Stirer.On"True" Sets command.
..$G Starts stirrer.