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Using the PF Command to Format Response from Interrogation Commands
The command, PF, can change format of the values returned by theses interrogation commands:
BL ?
LE ?
DE ?
PA ?
DP ?
PR ?
EM ?
TN ?
FL ?
VE ?
IP ?
TE
TP
The numeric values may be formatted in decimal or hexadecimal* with a specified number of digits to
the right and left of the decimal point using the PF command.
Position Format is specified by:
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:
Instruction
Interpretation
: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 Response
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
DMC-14x5/6
Chapter 7 Application Programming
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121
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