DH Instruments PPC2 AF - Commands; Command List

4. REMOTE OPERATION
Page 57 © 1998 DH Instruments, Inc.
4.3 COMMANDS
All PPC2 AF commands are ASCII strings. All commands must be terminated with the correct terminating
characters (see Section 3.4.4.3). The default terminating characters are <CR><LF>. The user must wait
for the PPC2 AF to reply before sending another command. All replies from the PPC2 AF are ASCII and
are terminated with the designated terminating characters.
4.3.1 COMMAND LIST
#
Send a command string out of the PPC2 AF COM2 port.
ABORT
Stop pressure generation.
ATM
Read the current atmospheric pressure
COMn(=)
Read or set the configuration of the COM1 or COM2 port.
DATE(=)
Read or set the current date.
DF=
Decrease the pressure quickly.
DP=
Decrease the pressure a given amount.
DRV
Read or set the status of an external valve drivers.
DS
Decrease pressure slowly.
ERR
Read the last error message.
HEAD(=)
Read or set the head settings.
HS(%)(=)
Read or set the current control hold limit.
IF=
Increase the pressure quickly.
IP=
Slowly increase the pressure a given amount.
IS=
Increase the pressure slowly.
LOCAL
Returns control to the PPC2 AF front panel.
MEM
Read the power up memory test status.
MODE(=)
Read or set the current pressure control mode.
PCALd,r(=)
Read or set the user reference pressure transducer calibration information.
PR
Read the next PPC2 AF pressure.
PRR
Read the next PPC2 AF pressure and rate.
PS=
Set a new target pressure & start a pressure generation cycle.
PSF=
Set a new target pressure & use only the fast speed to reach the target.
PSS=
Set a new target pressure & use only the slow speed to reach the target.
RANGE
Read or set the active range of the PPC2 AF.
RATE
Read the next available rate of pressure change.
READYCK(=)
Read or set a flag that is cleared by a “Not Ready” condition.
REMOTE
Enable remote local lockout operation.
RES
Read or set the pressure display resolution for the current transducer and range.
RESET
Reset the PPC2 AF to the default pressure control parameters.
RETURN
Start a new generation using the current target.
SAVECAL
Save changes made to the user calibration of the reference pressure transducer.
SN
Read the serial number of the PPC2 AF.
SR
Read the next available pressure ready status.
SS%(=)
Read or set the stability required for a ready condition (% F.S./ s).
STAT
Read the pressure generation status.
TIME(=)
Read or set the current time of day.
TP
Read the current target pressure.
UCOEF(=)
Convert a pressure in Pascal to pressure in the current units.
UL(=)
Read or set the upper limit for the current range.
UNIT(=)
Read or set the pressure unit for the current transducer and range.
VAC(=)
Read or set the exhaust reference status flag.
VENT(=)
Read, execute or abort a vent process.
VER
Read the PPC2 AF software version.