CF 126
25
Nov 2001
FF
Transmit Analog-to-Digital Converter Reading
Purpose
To transmit the Analog-to-Digital converter reading as a percentage from -100% to +100%
of the AID converter’s full scale
Usage
“#aacc
FF
↵
”
# is the 'pound' or 'hash' character (ASCII decimal 35).
aa is the two-character instrument address. cc is the two-character channel number
↵
is the 'carriage return' character (ASCII decimal 13 ).
Example
“#0001FF
↵
”
Reply
“872945" (typical)
Remarks none
FH
Write DAC Control Value
Purpose
To control the channel's Digital-to-Analog Converter (DAC) manually or automatically.
Usage
“#aacc
FH
n
↵
”
# is the 'pound' or 'hash' character (ASCII decimal 35)
aa is the two-character instrument address
cc is the two-character channel number
n is the argument defined below
↵
is the 'carriage return' character (ASCII decimal 13 ).
Argument
"AUTO" returns the DAC to its normal automatic operation (power-on default). That is, it is
controlled by the "
DAC. CHANNEL", “DAC. SOURCE", "DAC. ZERO-SCALE"
and "
DAC.
FULL-SCALE
" menu items.
If the argument is a numeric value between -1 and +1, the DAC is forced to manual
control and the value is used to drive the DAC from -100% to +100% of its output.
Example
“#0001FH.5
↵
will force channel 01 's DAC to +50% of full-scale.
Reply "
OK
" or "
ERROR
"
Remarks
You might wish to force a channel's DAC to a certain output to help calibrate the attached
data acquisition system or other device.
R5/W5
Read/write Full-Scale Value
Purpose
Reads or writes the channel's "FULL SCALE VALUE" menu item
Usage
“#aacc
R5
↵
” to read, “aacc
W5
n
↵
” to write
# is the 'pound' or 'hash' character (ASCII decimal 35).
aa is the two-character instrument address. cc is the two-character channel number
n is the full-scale value in engineering units.
↵
is the 'carriage return' character (ASCII decimal 13).
Example
“ 0001W520000
↵
”
Reply
When writing: "
OK
" or "
ERROR
".
When reading: an ASCll-floating-point value.
Changing this value has no effect until the channel is recalibrated to the transducer.
R6/W6
Read/write Units Label
Purpose
Reads or writes the channel's "DISPLAY. UNITS" menu item
Usage
“#aacc
R6
↵
” to read, “#aacc
W6
n
↵
” to write.
# is the 'pound' or 'hash' character (ASCII decimal 35).
aa is the two-character instrument address.
cc is the two-character channel number
n is the four-character units label.
↵
is the 'carriage return' character (ASCII decimal 13 ).
Example
“#0001W6CATS
↵
”
Reply
When writing: "
OK
" or "
ERROR
".
When reading: a four-character string.
Changing this value doesn't change the mathematically scaling of the channel's values;
that can be changed by altering the "
CALIBRATION DATA -> FULL -SCALE VALUE
"
menu item and performing a recalibration.
