Metrohm 840 PC Control 5.0 / Touch Control - Manual (Page 265)

4 Parameters
PC Control / Touch Control
253
4.5.8 Result variables as parameters
In many numerical entries for method parameters you can also enter
a result which has previously been calculated (e. g. R1) instead of a
number. The result must have been calculated in a previous CALC
command in the method sequence. Please note that the result must be
within the input limits for the parameter, as otherwise the determination
run will be halted when the parameter is accessed.
With PC Control the result variables are entered directly via the PC key-
board. With Touch Control the button [R1] is used to open the numeri-
cal input dialog with a selection of result variables from R1 to R9 (see
Section 3.1.4 ).
A typical application is the use of a relative start volume. To define a
start volume which is dependent on the sample weight proceed as fol-
lows:
Before the titration command define a CALC command in which
the relative start volume is calculated, e. g. R1=C00*3 (C00 = sam-
ple weight).
In the titration command enter the variable R1 as the start volume.