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C4 Manual Rev 7.5.2
7.4.5 QF, QFA Query Setup Parameter Value
This command returns the current (SRAM) value of a setup parameter field. QF
requests the data to be returned in binary form, QFA requests the data to be
returned in ASCII text form. The syntax of the command is:
QFnn<CR><LF> QFAnn<CR><LF>
(Query for binary) (Query for ASCII text)
Where nn is a one or two byte ASCII text decimal number of the setup
parameter field to be returned.
For parameters numbered 0 through 16:
If QF is used, the value stored for that parameter is returned as a one byte binary
value in an ASCII string as follows:
QFnn<space><binary byte><CR><LF>
Where nn is the setup parameter number in 2 bytes of ASCII text decimal
(leading zero if required).
If QFA is used, the value is returned in two bytes of ASCII hex in the format 00 in
an ASCII string followed by CR/LF as follows:
QFAnn<space>hh<CR><LF>
Where nn is the setup parameter number in 2 bytes of ASCII text decimal
(leading zero if required) and hh is the ASCII hex value.
For parameters numbered 17 through 30:
The values returned for parameters numbered 17 through 30 are temperatures
expressed as ASCII floating point decimal numbers with one decimal place.
Negative values will have a leading minus sign. If the value is a Fahrenheit
value, the character “F” will be appended to the end of the string. CR/LF
terminates the string. QF and QFA return the same strings for parameters 17
through 30. Format of the returned data is::
QFnn<space>-123.4F<CR><LF>
QFAnn<space>-123.4F<CR><LF>
Note: The values returned by QF and QFA are the values held in SRAM and are
the working copy values. These values are originally obtained for Remote mode
from the permanent EEPROM values used by Local and Program modes. If any of