PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 96
IP
Purpose Increase the pressure a given amount using the slow speed.
Command “IP n”
Classic “IP=n”
Arguments n: The increase in pressure desired (current pressure units). This can be from
0 to 2 % FS of the active range.
Remarks The slow speed will be used for a calculated amount of time (up to 5 seconds) to create the
desired change. The PPC3 will not attempt to control the pressure to a target, so the change in
pressure will be approximate. This is the equivalent of using the step down direct pressure control
key.
Example
(enhanced)
Cmd sent:
Reply:
“IP 2”
“2.000 kPa” (no reply if IEEE-488)
Example
(enhanced)
Cmd sent:
Reply:
“IP? 2”
“2.000 kPa”
Example
(classic)
Sent:
Reply:
“IP=2”
“2.000 kPa”
Errors ERR# 6: The n argument is not within given limits.
See Also “DP”, “IF” , “DF”, “IS”, “DS”
3.4.3, 3.1.3
IS
Purpose Increase the pressure slowly.
Command “IS n”
Classic “IS=n”
Arguments n: ‘0’ Closes the slow up valve.
‘1’ Opens the slow up valve.
Remarks Opening the slow up valve causes the pressure to increase slowly. Care must be used, as the
pressure will not stop increasing until the valve is closed, or the upper limit is exceeded.
Example
(enhanced)
Cmd sent:
Reply:
“IS 1”
“1” (no reply if IEEE-488)
Example
(enhanced)
Cmd sent:
Reply:
“IS? 1”
“1”
Example
(classic)
Sent:
Reply:
“IS=1”
“IS=1”
Errors ERR# 6: The n argument is a ‘0’ or a ‘1’.
See Also “DS” , “IF” , “DF”, “IP”, “DP”
Figure 12
L2 / L3
Purpose Read or set the type of program command format to use (classic or enhanced).
Command
“L2” enables “classic” mode
“L3” enables “enhanced” mode
Defaults “L2” (Classic mode)
Remarks The user can select the type of remote command format using these simplified commands.
There is no query format. This format must agree with the format sent to the RPM4. This
command is a replacement for the “MSGFMT” command.
Example
(enhanced)
Cmd sent:
Query reply:
“L3”
“L3” (No reply if IEEE-488)
Example
(classic)
Sent:
Reply:
“L2”
“L2”
See Also “MSGFMT”
3.5.2.3, 4.3
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