2 rs232 interface – Metrohm 766 IC Sample Processor User Manual

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5.2 RS232 interface

766 IC Sample Processor

5.2

RS232 interface

5.2.1

General rules for remote control

The 766 IC Sample Processor is equipped with the comprehensive

Metrohm remote control language, which allows full control over the in-

strument via an RS232 interface, i.e. the 766 IC Sample Processor can

receive data from an external device or send data to an external device.

The 766 IC Sample Processor sends 2

and L

as the terminator of a

requested data block. In contrast, C

and L

are used as the termina-

tor of a data line. On receipt of data from an external device, this must

always close its commands with C

and L

. If more than one command

is sent on a line, ‘

;

’ must be used as a delimiter between the individual

commands.
The data are grouped logically and readily understandable. For exam-

ple, to select the dialog language the command

&Config.Aux.Language

english

must be sent with entry of the boldface characters sufficing, in other

words

&C.A.L

english

All quantities of the 766 IC Sample Processor are collected in groups.

The entries for the configuration, for example, are located in the group

&Config

The ‘Config’ group contains sub-groups, e.g. for setting the RS232 in-

terface parameters

&Config.RSset

or for various settings

&Config.Aux

The data have a hierarchical structure (tree structure). The quantities

which appear in this tree are called objects in what follows. The dialog

language is that object which is called up with the command

&Config.Aux.Language

Once you are at the desired location in the tree, you can request the

value of the object:

&Config.Aux.Language $Q Q for query

The inquiry ‘

’ initiates the output of the value on the instrument, in

other words the value output is triggered. Entries which begin with the

character ‘

’ always trigger something and are hence referred to as

triggers in what follows.
However, values of objects can not only be requested, they can also be

modified. Values are always inputted in inverted commas, e.g.

&Config.Aux.Language

english