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DMC-3425 Chapter 7 Application Programming• 139
Formatting Variables and Array Elements
The Variable Format (VF) command is used to format variables and array elements. The VF
command is specified by:
VF m.n
where m is the number of digits to the left of the decimal point (0 thru 10) and n is the number of digits
to the right of the decimal point (0 thru 4).
A negative sign for m specifies hexadecimal format. The default format for VF is VF 10.4
Hex values are returned preceded by a $ and in 2's complement.
Instruction
Interpretation
V1=10 Assign V1
V1= Return V1
:0000000010.0000 Response - Default format
VF2.2 Change format
V1= Return V1
:10.00 Response - New format
VF-2.2 Specify hex format
V1= Return V1
$0A.00 Response - Hex value
VF1 Change format
V1= Return V1
:9 Response - Overflow
Local Formatting of Variables
PF and VF commands are global format commands that affect the format of all relevant returned
values and variables. Variables may also be formatted locally. To format locally, use the command,
{Fn.m} or {$n.m} following the variable name and the ‘=’ symbol. F specifies decimal and $ specifies
hexadecimal. n is the number of digits to the left of the decimal, and m is the number of digits to the
right of the decimal.
Instruction
Interpretation
V1=10 Assign V1
V1= Return V1
:0000000010.0000 Default Format
V1={F4.2} Specify local format
:0010.00 New format
V1={$4.2} Specify hex format
:$000A.00 Hex value
V1="ALPHA" Assign string "ALPHA" to V1
V1={S4} Specify string format first 4 characters
:ALPH
The local format is also used with the MG command.