4. REMOTE OPERATION
Page 67 © 1998 DH Instruments, Inc.
RANGE
Purpose: Read or change the range and active transducer of the PPC2 AF.
Syntax: “RANGE”
“RANGE=n,XX“
“RANGE=3,HI“
Arguments:
n: ‘1’ for the low range of the selected transducer.
‘2’ for the mid range of the selected transducer.
‘3’ for the high range of the selected transducer.
XX: ‘Lo’ for the low pressure transducer.
‘Hi’ for the high pressure transducer.
Remarks: The range and active transducer must be selected before making changes to settings that are
dependent on the range. Each of the 2 transducers has 3 separate ranges. You must specify
both the range and the transducer. The system MUST BE VENTED to switch transducers. The
reply is the current or the new range value in psi.
Example: Command: “RANGE”
Reply: “1000 psia”
Errors:
ERR# 6: Invalid n or XX argument.
ERR# 22: System must be vented for the requested operation.
See Also: 3.1.2.5, 3.2.1
RATE
Purpose: Read the next available pressure rate of change.
Syntax: “RATE”
Remarks: The next available pressure rate of change in the current pressure units per second is returned.
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: “RATE”
Reply: “0.01 kPa/s”
See Also: None
READYCK (=)
Purpose: Read or set the ready check flag.
Syntax: “READYCK”
“READYCK=1”
Remarks: The internal ready check flag is cleared whenever the PPC2 AF reaches a Not Ready (NR)
condition. The "READYCK" command will return the status of this flag. This flag can only be set
by sending the "READYCK=1" command while the PPC2 AF is in a Ready condition. You can
then use “READYCK” command at a later time to determine if a Not Ready (NR) condition has
occurred since. If a not ready (“NR”) has occurred, the reply will be “READYCK=0". Otherwise,
the reply will be “READYCK=1”.
Example: Command: "READYCK=1"
Reply: "READYCK=1" (if PPC2 AF condition is Ready)
“READYCK=0" (if PPC2 AF condition is Not Ready)
Errors: ERR# 6: Argument is not a ‘0’ or a ‘1’.
See Also: “SR” command, 3.1.2.4
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