4. REMOTE OPERATION
Page 63 © 1998 DH Instruments, Inc.
IP=
Purpose: Increase the pressure a given amount using the slow speed.
Syntax:
“IP=n”
Arguments:
n The increase in pressure desired (current pressure units). This can be from 0
to 2% FS of the current transducer 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 AF will not attempt to control the pressure to a target, so the change
in pressure will be approximate.
Example: Command: “IP=10”
Reply: “10.00 kPa a”
Errors:
ERR# 6: The n argument is not within given limits.
See Also: None.
IS=
Purpose: Increase the pressure slowly.
Syntax:
“IS=n”
Arguments:
n ‘0’ Closes the slow up valve.
‘1’ Opens the slow up valve.
Remarks: Opening the slow up valve will cause 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 passed.
Example: Command: “IS=1”
Reply: “IS=1”
Errors:
ERR# 6: The n argument is a ‘0’ or a ‘1’.
See Also: “UL” command, 1.2.7
LOCAL
Purpose: Returns control to the PPC2 AF front panel.
Syntax: “LOCAL”
Remarks: The REMOTE command can lock the front panel out completely. The user can return to local
operation by sending the LOCAL command. or by powering the PPC2 AF off.
Example: Command: “LOCAL”
Reply: “LOCAL”
See Also: “REMOTE” command
MEM
Purpose: Read the status from the power up memory test.
Syntax: “MEM”
Remarks: The PPC2 AF system memory stores the user settings (units, resolution, generation settings)
and retains them when the unit if off. On power up, this memory is checked. If this memory is
corrupted, all user settings are reset to default (as if the “RESET” command was executed), and
the MEM status will be set to reflect this.
Example: Command: “MEM”
Reply “MEM=0” The memory was found to be corrupted on power up, and all user
setting were reset to factory defaults.
“MEM=1” The memory was found to be OK on power up
See Also: “RESET” command, 3.4.4.5
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