PPCH™ OPERATION AND MAINTENANCE MANUAL
© 2009 DH Instruments, a Fluke Company
Page 124
STAT
Purpose
Read the pressure control status.
Query “STAT?”
Classic “STAT”
Remarks
The pressure or rate control cycle status can be checked using this program message. It
returns a ‘1’ if the PPCH is actively controlling a pressure, a rate, is venting, or is holding a
pressure. It returns a ‘0’ if it is idle or completely vented..
Example
(enhanced)
Query sent:
Reply:
“STAT?”
“1”
Example
(classic)
Sent:
Reply:
“STAT”
“1”
See Also
“PS“, “RS”
3.2.2, 3.3.10
TIME
Purpose
Read or set the PPCH internal clock.
Command
Query
“TIME
hh:mmXX
”
“TIME?”
Classic “TIME=
hh:mmXX
”
“TIME”
Arguments
hh:mm:
XX:
The time in a 12 hour format using a colon delimiter
”am” or “pm”
Remarks
The PPCH has an internal real time clock. It is used for date stamping calibrations and log data.
Example
(enhanced)
Cmd sent:
Reply:
“TIME 12:52PM”
“12:52pm”
(No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Reply:
“TIME? 12:52PM”
“12:52pm”
Example
(classic)
Sent:
Reply:
“TIME=12:52PM”
“12:52pm”
Errors
ERR# 7:
Missing or improper program message argument(s).
See Also
“DATE”
3.5.5.3
TP
Purpose
To read the current target pressure.
Query “TP?”
Classic “TP”
Remarks
The current target pressure is replied in the current pressure unit of measure.
Example
(enhanced)
Query sent:
Reply:
“TP?”
“10.000 MPa a”
Example
(classic)
Sent:
Reply:
“TP”
“10.000 MPa a”
See Also
“PS“
3.3.10
TPCCFG (planned command as of PPCH Ver. 1.01f)
Purpose
Start or check the status of a volume determination (TPC configuration).
Command
Query
“TPCCFG
n
”
“TPCVOL?”
Classic “TPCCFG=
n
”
“TPCCFG”
Arguments
n
:
’0’ Abort a previously started volume determination routine
’1’ Start a new volume determination routine
Remarks
The PPCH volume routine takes 1 to 3 minutes to wait for stability and to determine the
volume of the system into which the PPCH is controlling pressure. During this period, any
other commands other than a query may abort this routine. The query form will reply the
current volume if a previously started volume determination has completed or “BUSY” if a
volume determination is still running. Pressure must be at least 1 MPa (150 psi) for the
volume determination routine to run.
Example
(enhanced)
Cmd sent:
Reply:
“TPCCFG 1”
“1”
(No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Reply:
“TPCCFG?”
“BUSY” (volume
determination is running)
“220 cc”
(volume determination is complete)
Example
(classic)
Sent:
Reply:
“TPCCFG=1”
“TPCCFG=1”
Errors ERR#
6:
ERR# 54:
ERR# 22:
The argument was other than a ‘0’ or a ‘1’ (reply to a command only)
The pressure is below the minimum of 1 Mpa (reply to a command only)
The pressure is not stable enough (reply to query only)
See Also
“ABORT”
3.5.7.1
