DH Instruments PPC3 - Page 119

4. REMOTE OPERATION
Page 109 © 2002-2007 DH Instruments, a Fluke Company
SS
Purpose Read or set the current pressure stability limit.
Command
Query
“SS n”
“SS?”
Classic “SS=n”
“SS”
Arguments N: The stability limit in the current pressure unit of measure.
Remarks The stability limit can be read and set as a pressure. The stability limit is used as the
Ready/Not Ready criterion in static control mode and when PPC3 not controlling.
Example
(enhanced)
Cmd sent:
Query reply:
“SS .1”
“0.10 kPa/s” (No reply from GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“SS? .1”
“0.10 kPa/s”
Example
(classic)
Sent:
Reply:
“SS=.1”
“0.10 kPa/s”
Errors ERR# 6 The argument was invalid.
See Also “HS”
3.4.6.1
STAT
Purpose Read the pressure control status.
Query “STAT?”
Classic “STAT”
Remarks The pressure control cycle status can be checked using this program message. The reply is a
numeric code which references a specific pressure control action: Multiple codes are returned
by logically arranging them together.
0
1
2
4
8
16
32
64
128
256
1024
4096
8192
16394
32768
The system is not generating or holding a pressure.
A new generation is preparing to start.
Quick ramping to the target.
Quick pulsing to the target.
Slow ramping to the target.
Slow pulsing to the target.
Reached the target, will re-adjust as needed to stay ready.
Quick ramping to a vent condition.
Vented with the exhaust valve open.
Quickly decreasing the pressure to reach a hard vacuum.
A new target has been requested but generation has not started.
Dynamic pulsing is being used to control a pressure.
Static pulsing is being used to control a pressure.
Low pressure control is active.
Very low pressure control is active.
Example
(enhanced)
Query sent:
Query reply:
“STAT?”
“32”
Example
(classic)
Sent:
Reply:
“STAT”
“32”
See Also “PS“
3.2.1, 3.3.10
TIME
Purpose Read or set the PPC3 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 PPC3 has an internal real time clock. It is used for date stamping calibrations and log data.
Example
(enhanced)
Cmd sent:
Query reply:
“TIME 12:52PM”
“12:52pm” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query 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