DH Instruments PPC3 - Page 102

PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 92
COM2
Purpose Read or set the RS232 settings for the COM2 port.
Command
Query
“COM2 baud,parity,data,stop”
“COM2?”
Classic “COM2= baud,parity,data,stop”
“COM2”
Arguments baud: The baud rate. This may be ‘300’, ‘600’,’1200’,’2400’,’4800’, ‘9600’ or ‘19200’.
parity: The data parity. This may be ‘O’ for odd, ‘E’ for even, or ‘N’ for none.
Data: The number of data bits. This may be ‘7’ or ‘8’.
stop: The number of stop bits. This may be ‘1’ or ‘0’.
Defaults “COM2 2400,E,7,1”
Remarks
COM2 is generally used to connect DHI RPM4 external measurement devices. The COM2
port can also be used to allow the host computer to communicate through the PPC3 to an
additional device connected to COM2. This can be useful if the host computer does not have
2 serial ports available.
Example
(enhanced)
Cmd sent:
Query reply:
“COM2 9600,N,8,1”
“9600,N,8,1” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“COM2? 9600,N,8,1”
“9600,N,8,1”
Example
(classic)
Sent:
Reply:
“COM2=9600,N,8,1”
“9600,N,8,1”
Errors ERR# 7: Missing or improper program message argument(s).
See Also “#”, “PASSTHRU”
3.5.2.1
CONFIG
This is a legacy PPC2 command
Purpose PPC3 does not support a remotely activated configuration routine. The “CONFIG” command
from PPC2 will reply as if CONFIG had occurred.
See 3.4.7.1
DATE
Purpose Read or set the PPC3 date.
Command
Query
“DATE date”
“DATE?”
Classic “DATE= date”
“DATE”
Arguments date: The date in the numerical only format YYYYMMDD or YYMMDD with no
spaces or separators.
Remarks The PPC3 has an internal real time calendar clock. It is used for date stamping calibrations.
The reply is always in the YYYYMMDD format.
Example
(enhanced)
Cmd sent:
Query reply:
“DATE 20030115”
“20030105” (No reply if GPIB-488)
Example
(enhanced)
Cmd sent:
Query reply:
“DATE? 20030105”
“20020105”
Example
(classic)
Sent:
Reply:
“DATE=021201”
“20021201”
Errors ERR# 7: Missing or improper program message argument(s).
See Also “TIME”
3.5.5.3
DF
Purpose Decrease the pressure quickly (fast).
Command “DF n”
Classic “DF=n”
Arguments ‘0’
‘1’
Closes the fast down valve.
Opens the fast down valve.
Remarks Opening the fast down valve causes the pressure to decrease quickly.
Example
(enhanced)
Cmd sent:
Reply:
“DF 1”
“1” (no reply if IEEE-488)
Example
(enhanced)
Cmd sent:
Reply:
“DF? 1”
“1”
Example
(classic)
Sent:
Reply:
“DF=1”
“DF=1”
Errors ERR# 6: The n argument is a ‘0’ or a ‘1’.
See Also “IF” , “DS”, “IS”, “IP”, “DP”,
Figure 12