3 rs232 interfaces – Metrohm 746 VA Trace Analyzer User Manual
Page 574
8.3 RS232 interfaces
746 VA Trace Analyzer / 747 VA Stand
8-13
In the send mode
Remote keyboard = send
, each time a key is pressed on the 746
VA Trace Analyzer the corresponding key code is put out via RS232 interface 1 as
an ASCII character. These key codes can be stored using a suitable PC program.
In the receive mode
Remote keyboard = receive
, every ASCII character received
via RS232 interface 1 is interpreted as a key code and initiates the same functions
as if the appropriate key on the keypad were to be pressed. The key codes for the
special keys on the 746 VA Trace Analyzer are listed below. It is thus possible to
control all functions of the 746 VA Trace Analyzer from an external device. Even in-
dividual parameters (e.g. sample data on the dialog page ”SAMPLES”) can be en-
tered in this manner. It is also possible to send the key code for <
?
> or <
@
> to ini-
tiate the output of the contents of a field or screen (see section 8.3.3).
Key code for special keys on the 746 VA Trace Analyzer
Alt +
Key
Alt +
Key
Alt +
Key
008
203 ËË
012
184 ¸¸
204 ÌÌ
013
185 ¹¹
206 ÎÎ
<
↑
>
032
188 ¼¼
207 ÏÏ
063 ?
Field output
190 ¾¾
208 ÐÐ
064 @
Screen output
191 ¿¿