Metrohm 774 Oven Sample Processor - Manual (Page 85)

5.4 Command reference
774 Oven Sample Processor, Instructions for use 79
DOS
DOS
6
>sample sequence
06 DOS 1 : 1 ml
1…12,* fill,
release,
prepar.,
empty,
0.001…1…999.999 ml
Dosing Control
The DOS command is used to control Dosimats and Dosinos. Up to 12
Dosinos or Dosimats can be addressed via the External Bus control.
In addition to adding a certain volume, specific actions can be initiated.
fill
Filling the Dosimat or Dosino burette
release Prepare Dosimat or Dosino for changing the exchange unit. Bu-
rette is filled via the rinsing port. The stop cock is turned to the
exchange position.
prep Preparation cycle for Dosinos. All tubing is rinsed and filled
completely.
empty Empty burette of the Dosino via dosing port.
In the Parameter Menu under “>dosing unit def.” the port assignments for
Dosinos can be defined as well as method-specific dosing and filling
speeds. This can also be done within a sequence with the corresponding
'DEF' command.
More info about Dosino commands and port assignments is found on page
91ff.
The changer recognizes automatically whether a Dosimat or a Dosino is
connected.
SCAN
1
SCAN >sample sequence
7 SCN:Rm : Ready1
Rm,RS Ready1
End1
Cond ok
Cond 737
no error
8 Bit (1,0 or ∗)
Scanning the remote interface
= device 1 ready
= EOD pulse of device 1
= device conditioned
= Coulometer 737 conditioned
= no error status
any 8-bit pattern
In a sequence the SCN:Rm command causes method processing to stop
until the predefined bit pattern is received.
Predefined bit patterns are supported which can be selected by short
names (for example: "Ready1" or "End1").
"Ready" signifies a static "Ready" line of an external Metrohm instrument.
“End" stands for pulse signals, for example EOD (=end of determination).
When scanning for pulse signals parallel scanning of several lines cannot
be applied.