4. REMOTE OPERATION
Page 65 © 1998 DH Instruments, Inc.
PR
Purpose: Read the next available pressure.
Syntax: “PR”
Arguments:
Remarks: The next available pressure value for the active transducer (Lo or Hi) and range is read in the
current pressure units. The data returned also contains ready information, and the pressure
units.
The reply field is always 20 characters long. The first 3 characters of the reply are reserved for
the ready status (R or NR). The ready status is covered in the “SR” command. The pressure
measurement value and pressure units are right justified in this field.
After receiving this command, the PPC2 AF will reply back with the data once a new pressure
measurement cycle is complete. This can take up to 1.5 seconds.
Example: Command: “PR”
Reply: “R 1936.72 kPa a”
Errors:
See Also: “SR” command, 3.1.2.3, 3.1.2.4
PRR
Purpose: Read the next available pressure and rate.
Syntax: “PRR”
Arguments: ready: ‘R’ if the current pressure ready criteria has been met,
‘NR’ if the criteria has not been met. (see the “SR” command)
pressure The measured pressure for the selected transducer and range in the current
pressure units. This is followed by the current pressure units.
rate The measured rate for the selected transducer and range in the current
pressure units per second. This is followed by the current pressure units.
atm The ambient pressure measured by the PPC2 AF internal barometer in the
current pressure units (but always absolute). This is followed by the current
pressure units.
After receiving this command, the PPC2 AF will reply back with the data once
a new pressure measurement cycle is complete. This can take up to 1.5
seconds.
Remarks: The next available ready condition, pressure rate of pressure change, and ambient pressure for
the active transducer (Lo or Hi) and range is read in the current pressure units. Each data field
is separated by a comma, and is returned in the following order:
ready, pressure UNITS, rate UNITS/s, atm UNITS
Example: Command: “PRR”
Reply: “R,2306.265 kPa a,0.011 kPa/s,97.000 kPa a”
See Also: “SR” command
To Next Page
Loading...