3 operation via rs232 interface, 1 general rules – Metrohm 794 Basic Titrino User Manual

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3.1 General rules

794 Basic Titrino

77

3 Operation via RS232 Interface

3.1 General rules

The Titrino has an extensive remote control facility that allows full control of

the Titrino via the RS 232 interface, i.e. the Titrino can receive data from an

external controller or send data to an external controller. CR and LF are used

as terminators for the data transfer. The Titrino sends 2xCR and LF as termi-

nation of a data block, to differentiate between a data line which has CR and

LF as terminators. The controller terminates its commands with CR and LF. If

more than one command per line is sent by the controller, “;” is used as a

separator between the individual commands.

The data are grouped logically and easy to understand. Thus e.g., for the se-

lection of the dialog language, the following must be sent

&Config.Aux.Language "english"

whereby it is sufficient to only transmit the boldface characters, thus:

&C.A.L "english"

The quantities of the commands above are:

Config configuration

data

Aux

auxiliaries, various data

Language

setting the dialog language

The data are hierarchically structured (tree form). The quantities that occur in

this tree are called objects in the following. The dialog language is an object

which can be called up with the

&Config.Aux.Language

command.

If one is in the desired location in the tree, the value of the object can be que-

ried.

&Config.Aux.Language $Q Q means Query

The query command $Q initiates the issuing of the value on the instrument

and the value emission is triggered. Entries which start with $, trigger some-

thing. They are thus called triggers.

Values of objects can not only be queried, they can also be modified. Values

are always entered in quotes, for example:

&Config.Aux.Language "english"

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