Read Primary Transducer Volts (Command 'V') - Pressure Systems 9046 User Manual

Pressure Systems, Inc.

5.4 Read Primary Transducer Volts (Command 'V')

Purpose :
Returns the most recently acquired primary transducer (i.e., temperature/ resistance) raw data
for the specified channels. These data are averaged signed A/D counts (in the range -32768 to
+32767). This simple data bypasses using the transducer's E. U. conversion coefficients
(c0..c3) and the calibration adjustment coefficients (offset and gain). Each (non-binary) datum
returned in the response will be in the specified high-precision data format. (NOTE: the formula
for converting A/D counts to volts is: Volts = A/D Counts * 5/32768 ) This command is intended
for advanced users only and is not required for normal operation.
Command " Vppppf "
'V' is the operation code
'pppp' position field (channel selection bit map)
'f' is the format field
Response " dddd.. [dddd] "
'dddd' are the data fields, each with a leading
space (except f =7 or 8).
Description : The 4-character hex position field (pppp) specifies a 16-bit binary bit-map, with
each bit (set to 1) to specify a particular channel number (16-1, left-to-right).
The 1-character format field ( f) specifies the format of each data field ( dddd ) that will be returned
in the requested response. The first datum returned in the response will be for the highest
channel number requested. Each (non-binary) datum will be preceded by a space character.
Some formats may not be applicable to the specific type of data being requested. Valid formats
are shown in the following table:
f converts each internal response datum value from:
0 single binary float
1 single binary float
2 double binary float to 16-digit hex integer " xxxxxxxxxxxxxxxx"
5 single binary float
integer
7 single binary float
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to 7-10-digit signed decimal " [-xxx]x.xxxxxx"
to 8-digit hex integer " xxxxxxxx"
to long integer (EU*1000) then to 8-digit hex
to single binary float (big endian: msb first)
Model 9046 User's Manual
max.char.
13
9
17
9
4
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