Read transducer voltages (command 'v') – Pressure Systems 98RK-1 User Manual
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Pressure Systems, Inc. 98RK-1 & 9816 User’s Manual©
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READ TRANSDUCER VOLTAGES (Command 'V')
Purpose:
Returns, for the specified channels, the most recently acquired raw pressure
data, converted to volts directly from the averaged A/D counts. This simple
engineering-unit conversion bypasses any usage of the transducer’s factory-
calculated coefficients or the final calibration process’s correction coefficients
(offset and gain). Each datum returned in the response will be in the specified
high-precision data format. This command is intended for advanced users
only and is not required for normal operation.
Command
“V[p]ppppf”
‘V’ is the command letter
‘[p]pppp’ is the position field
‘f’ is the format field
Response
“ dddd[ dddd]...”
‘ dddd’ are datum fields, each with a leading space (except f =7).
Description: The 4 or 5 character hex position field ([p]pppp) specifies a 16 or 20 bit binary bit-
map, with each bit set to 1 to specify a particular channel number (S & P external
rack channels, plus internal channels 16-1, left-to-right).
The 1-character format field (f) specifies the format of each datum (‘ dddd’) that
will be returned in the requested response. The first datum returned in the
response will be for the highest channel number requested. 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..
max.char.
0
single binary float
to
7-10-digit signed decimal “ [-xxx]x.xxxxxx”
13
1
single binary float
to
8-digit hex integer “ xxxxxxxx”
9
2
double binary float to
16-digit hex integer “ xxxxxxxxxxxxxxxx”
17
5
single binary float
to
long integer (EU*1000) then to 8-digit hex
integer
9
7
single binary float
to
single binary float (big endian: msb first)
4
8
single binary float
to
single binary float (little endian: lsb first)
4