Metrohm 876 Dosimat plus - Manual (Page 69)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭
8 Appendix
876 Dosimat plus
￭￭￭￭￭￭￭￭ 61
On the 876 Dosimat plus the interface parameters are set under
Menu
▶ System ▶ External devices ▶ COM2 settings.
Transfer protocol
The data communication is synchronous. On each command there is an
answer by the instrument.
A command must be sent to the instrument with the control character CR
LF as terminator. The answers of the instrument will also be transferred
with CR LF as terminator.
The instrument does not send spontaneous messages.
8.8.1 Commands and variables
Command Function Comment
$G Start/Continue Corresponds to the key [START] or [Con-
tinue]
$S Stop Corresponds to the key [STOP]
$H Hold Hold the method run
$D Scan instrument sta-
tus Answers: Ready;0 , Busy;0 , or Hold;0 (0
= no message)
If a message on the instrument requires
the interaction of the user, the answer of
the status scan displays the corresponding
message number. Example:
Busy;010-119
= "Check buret unit"
The message can be quit with [OK] or
[Cancel], see below.
$A Quit message Confirm the message on the instrument
with [OK]
A mandatory status scan providing the
message number must take place immedi-
ately before quitting the message, see
above.
$A(OK), $A(CANCEL) Quit message Confirm the message with [OK] or [Can-
cel]
$A(YES), $A(NO) Quit message Confirm the message with [Yes] or [No]
$L(method name) Load method The method name has to be known and
unique.