DH Instruments PPC4, Operation And Maintenance Manual

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6. REMOTE OPERATION
Page 169 © 2009 DH Instruments, a Fluke Company
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 adding them them together.
0
1
2
4
8
16
32
64
128
256
1024
2048
4096
8192
16394
32768
65536
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.
Executing a purge operation.
Quickly decreasing the pressure to reach a hard vacuum.
A new target has been requested but generation has not started.
PWM low pressure control
Dynamic pulsing is being used to control a pressure.
Static pulsing is being used to control a pressure.
Low pressure pulsed control is active.
Very low pressure pulsed control is active.
Determining external volume
Example
(enhanced)
Query sent:
Query reply:
“STAT?”
“32”
Example
(classic)
Sent:
Reply:
“STAT”
“32”
See Also “PS“
3.2.2, 3.2.12
TIME
Purpose Read or set the PPC4 internal clock.
Purpose Read or set the PPC4 internal clock.
Command
Query
“TIME hh:mm:ssXX” or “TIME hh:mm:ss
“TIME?”
Classic “TIME=hh:mm:ssXX” or “TIME=hh:mm:ss”
“TIME”
Arguments
(12 hour mode)
hh:mm:
XX:
The time in a 12 hour format using a colon delimiter.
”am” or “pm”
Arguments
(24 hour mode)
hh:mm: The time in a 24 hour format using a colon delimiter
Remarks The PPC4 has an internal real time clock. It is used for date stamping calibrations and log data.
The TIMEFMT command can be used to set the clock for 12hr or 24hr mode
Example
(enhanced 12hr)
Cmd sent:
Query reply:
“TIME 12:52PM”
“12:52pm” (No reply if IEEE-488)
Example
(enhanced 12hr)
Cmd sent:
Query reply:
“TIME? 12:52PM”
“12:52pm”
Example
(classic 12hr)
Sent:
Reply:
“TIME=12:52PM”
“12:52pm”
Example
(classic 24hr)
Sent:
Reply:
“TIME=18:22”
“18:22”
Errors ERR# 7: Missing or improper program message argument(s).
See Also “TIMEFMT”, “DATE”
3.2.26.3