PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 88
4.4.4 PROGRAM MESSAGE DESCRIPTIONS
#
Purpose To allow the host PC to communicate with a device connected to the PPC3 COM2 port.
The preferred method is to use the “PASSTHRU” program message.
Classic “#xx”
Arguments xx: The string to send out of the COM2 port. It must be less than
40 characters long.
Remarks The PPC3 COM2 port can be used to communicate to another RS232 device (such as
another PPC3). This allows the user to use one COM port or IEEE-488 port on the host
computer to communicate with the PPC3 and another device. A carriage return and a
line feed (<CR><LF>) are added to the string.
After this program message is issued, the PPC3 will reply back the first string received by
the PPC3 COM2 port that is terminated with a carriage return. Line feeds are discarded.
This will discontinue when the next program message is sent to the PPC3.
There is no other reply from this program message. Prior to using this program message,
you must ensure that the PPC3 COM2 port is correctly set up to communicate with the
device on COM2. Refer to the “COM2=“ program message.
Example
(classic)
Sent:
Reply:
“#VER”
“DH INSTRUMENTS, INC PPC3 us A1000/A0015 Ver2.00 ”
This example assumes that a second PPC3’s COM1 port is connected to the PPC3 COM2
port. This example gets the version of the second PPC3.
See Also “PASSTHRU”, “COM2”
3.5.2
COM2 is generally used for connecting DHI RPM4s to supply external measurement
devices in which case communications are handled automatically by the PPC3,
ABORT
Purpose Stops active pressure generation/control. All control valves are closed. The exhaust and
transducer isolation valves are not affected.
Command
Classic
“ABORT”
“ABORT”
Remarks This program message has no effect if the PPC3 is not using automated pressure control.
When using automated pressure control, it aborts the control. This command is recommended
to idle the PPC3 before setting a new target pressure.
Example
(enhanced)
Cmd sent:
Reply:
“ABORT”
“ABORT” (no reply if IEEE-488)
Example
(enhanced)
Cmd sent:
Reply:
“ABORT?”
“ABORT”
Example
(classic)
Sent:
Reply:
“ABORT”
“ABORT”
See Also 3.3.10, 3.2.1
To Next Page
Loading...