Metrohm 848 Titrino plus Manuel d'utilisateur télécharger pdf (Page 137)

￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭

10 Appendix

848 Titrino plus

￭￭￭￭￭￭￭￭

127

Command Function Comment

$A Confirm message Confirm the message on the instrument

with [OK]

A mandatory status scan providing the

message number must take place immedi-

ately before confirming the message, see

above.

$A(OK), $A(CANCEL) Confirm message Confirm the message with [OK] or [Can-

cel]

$A(YES), $A(NO) Confirm message Confirm the message with [Yes] or [No]

$L(method name) Load method The method name has to be known and

unique.

$Q(variable) Request variable value Examples for variables: EP1, R1, C00.

Complete list of the variables, see page

23.

The values of the variables are only available after the end of a determina-

tion (in the status 'ready').

Acknowledgement of

the instrument

Comment

OK Command executed

E1 Method not found

E2 Invalid variable

E3 Invalid command

10.8 Arithmetic algorithms in the 848 Titrino plus

Numerical format

The software of the 848 Titrino plus calculates in accordance with the

widespread standard IEEE 754 (IEEE Standard for Binary Floating-Point

Arithmetic for Microprocessor Systems). This means that the numbers are

used in calculations in "double precision" (64 bit). Decimal numbers are

converted into binary numbers in the computer and used in this form for

calculations. The output on the display and in reports once again contains

decimal numbers; the binary numbers are thus converted back into deci-

mal numbers. In order to be able to check the internal calculations per-

formed by the computer yourself in accordance with IEEE 754, the num-

bers are reproduced in the calculation report in complete accuracy. A min-

1 2 ... 132 133 134 135 136 137 138 139 140 141 142 ... 154 155

Pas de commentaire

Metrohm 848 Titrino plus Manuel d'utilisateur Page 137