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164 • Chapter 7 Application Programming DMC-1700/1800
PF 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.
Hex values are returned preceded by a $ and in 2’s complement. Hex values should be input as signed 2’s
complement, where negative numbers have a negative sign. The default format is PF 10.0.
If the number of decimal places specified by PF is less than the actual value, a nine appears in all the decimal places.
Examples:
:DP21 Define position
:TPX Tell position
0000000021 Default format
:PF4 Change format to 4 places
:TPX Tell position
0021 New format
:PF-4 Change to hexadecimal format
:TPX Tell Position
$0015 Hexadecimal value
:PF2 Format 2 places
:TPX Tell Position
99 Returns 99 if position greater than 99
Removing Leading Zeros from Response to Interrogation Commands
The leading zeros on data returned as a response to interrogation commands can be removed by the use of the
command, LZ.
Example - Using the LZ command
LZ0 Disables the LZ function
TP Tell Position Interrogation Command
-0000000009, 0000000005, 0000000000, 0000000007
Response from Interrogation Command
(With Leading Zeros)
LZ1 Enables the LZ function
TP Tell Position Interrogation Command
-9, 5, 0, 7 Response from Interrogation Command
(Without Leading Zeros)
Local Formatting of Response of Interrogation Commands
The response of interrogation commands may be formatted locally. To format locally, use the command, {Fn.m} or
{$n.m} on the same line as the interrogation command. The symbol F specifies that the response should be returned
in decimal format 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. For example:
Examples:
TP {F2.2} Tell Position in decimal format 2.2
-05.00, 05.00, 00.00, 07.00 Response from Interrogation Command
TP {$4.2} Tell Position in hexadecimal format 4.2
FFFB.00,$0005.00,$0000.00,$0007.00 Response from Interrogation Command