DH Instruments PPC2+, Руководство пользователя

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PPC2+™ Operation and Maintenance Manual
©2001 DH Instruments, Inc.
Page 94
HS%
Purpose Read or set the hold limit for automated pressure control in percent of range full
scale.
Command
Query
“HS% n”
“HS%?”
Classic “HS%= n
“HS%”
Arguments n: The hold limit in % FS of the current active range.
Remarks The hold limit can be read and set as a pressure or as a percent of the range.
Example
(enhanced)
Cmd sent:
Query reply:
“HS .01”
“0.0100 %”
Example
(classic)
Sent:
Reply:
“HS=.01”
“0.0100 %”
Errors ERR# 6 The ‘n’ argument was invalid.
See Also Sections 3.1.2.3, 3.1.2.4, 3.2.3, 3.2.6, “HS”
IF
Purpose Increase the pressure quickly.
Command “IF n”
Classic “IF=
n”
Arguments n ‘0’ Closes the fast up valve.
‘1’ Opens the fast up valve.
Remarks Opening the fast up valve will cause the pressure to increase quickly. Care must be
used, as the pressure will not stop increasing until the valve is closed, or the upper
limit is passed.
Example
(enhanced)
Cmd sent:
Reply:
“IF 1”
“1” (no reply if IEEE-488)
Example
(classic)
Sent:
Reply:
“IF=1”
“IF=1”
Errors ERR# 6: The
n argument is a ‘0’ or a ‘1’.
See Also Section 5.8.1.7, “UL”
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 current RPT range.
Remarks The slow speed will be used for a calculated amount of time (up to 5 seconds) to
create the desired change. The PPC2+ will not attempt to control the pressure to a
target, so the change in pressure will be approximate.
Example
(enhanced)
Cmd sent:
Reply:
“IP 2”
“2.000 kPa”(no reply if IEEE-488)
Example
(classic)
Sent:
Reply:
“IP=2”
“2.000 kPa”
Errors ERR# 6: The n argument is not within given limits.
See Also None.