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6 interfaces, 1 rs232 interfaces, General rules for remote control – Metrohm 732 IC Detector User Manual

Page 168: Call-up of objects, Triggers, Status messages, Error messages, Remote control commands, Data transmission protocol, Handshake

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6.1 RS232 interfaces

732 IC Detector / 733 IC Separation Center

161

6

Interfaces

6.1

RS232 interfaces

The 732 IC Detector has two RS232 interfaces 15

15 and 16

16 (see Fig. 3)

which have the same features (see section 6.1.7 6.1.9), but can be

used differently.
RS232 interface 16

16 is reserved for the connection of a PC or a printer

(see section 2.9.4 – 2.9.5) and allows remote operation of the 732 IC

Detector 732 and 733 Separation Center 733 by an attached PC (see

section 6.1.1 – 6.1.6).
RS232 interface 15

15 is normally used for the attachment of a 709 IC

Pump, but a printer can also be connected in place of the pump (see

section 2.9.6).

6.1.1

General rules for remote control

The 732 IC Detector is equipped with the comprehensive Metrohm re-

mote control language, which allows full control over the instrument via

an RS232 interface, i.e. the IC Detector can receive data from an exter-

nal device or send data to an external device. The 732 IC Detector

sends 2

×

C

R

R

and L

F

F

as the terminator of a requested data block. In

contrast, C

R

R

and L

FF

are used as the terminator of a data line. On re-

ceipt of data from an external device, this must always close its com-

mands with C

R

R

and L

FF

. 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.Dialog

"

english

"

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

words

&C.A.D

"

english

"

All quantities of the 732 IC Detectors are collected in groups. The en-

tries 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