Metrohm 746 VA Trace Analyzer - Manual (Page 357)

5.7 Program instructions
746 VA Trace Analyzer / 747 VA Stand
5-206
Parameter Range; Default value / Meaning
Calc.f. A##; A##; A## (## = 01...15); -
Alternative results
If the test condition is met, the alternative results A## (max. 3) entered
here are activated, i.e. the corresponding formulae A##=..... on the
"CALCULATION" page are set to active for the calculation and marked
with an asterisk (
* ).
Either a space or the ; character must be entered between the A##
values.
Description The (CASE instruction opens a decision block which can contain any
type of instructions and is closed with the CASE) instruction. On the
basis of the test condition contained in the (CASE instruction as a
parameter (see (Test) ), a decision is made during the program run
whether or not the instructions which follow in the block are executed:
• If the test condition is met (true), the instructions which follow in the
decision block are executed up to the next CASE , EXIT or CASE)
instruction and a jump then made to the end of the block.
• If the test condition is not met (false), the instructions which follow in
the decision block are ignored up to the next CASE , EXIT or CASE)
instruction.
As an option, alternative results can also be specified which should be
activated when the test condition is met (see
Calc.f. ).
Comments • Any number of CASE blocks (CASE ... CASE) in succession are
permitted in a program.
• Maximum 2 CASE blocks can be nested, i.e. a second case block
may be located within a CASE block.
• A CASE block may contain any number of additional CASE instruc-
tions. After the first CASE instruction whose test condition is met,
however, no further CASE instruction is tested and a direct jump
made to the end of the CASE block.
• For test conditions with evaluation values EV: or mass
concentrations MC: , it must be borne in mind that these
values are set to 0 if no evaluation was possible. This can be used for
detection of this specific case (see examples).