DH Instruments E-DWT-H, Руководство по эксплуатации и обслуживанию

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4. REMOTE OPERATION
Page 83 © 2009 DH Instruments, a Fluke Company
COM1
Purpose Read or set the RS232 settings for the COM1 port.
Command
Query “COM1
baud, parity, data, stop
”
“COM1?”
Classic “COM1=
baud, parity, data, stop
”
“COM1”
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 ‘2’.
Defaults “COM1 2400,E,7,1”
Remarks The COM1 port is used to communicate to the RPM4-E-DWT. When the COM1 port configuration
of the RPM4-E-DWT is changed, the program message reply (COM1 use only) is sent at the old
COM1 settings, but all subsequent communications are accomplished at the new COM1 settings.
A 250ms or longer delay after receiving the reply to this command will ensure that the
RPM4
-
E
-
DWT has changed the COM port settings and is ready for communications at the new
settings.
Example
(enhanced) Cmd sent:
Query reply: “COM1 9600,N,8,1”
“9600,N,8,1”
(No reply if GPIB-488)
Example
(enhanced) Cmd sent:
Query reply: “COM1? 9600,N,8,1”
“9600,N,8,1”
Example
(classic)) Sent:
Reply: “COM1=9600,N,8,1”
“9600,N,8,1”
Errors ERR# 7: Missing or improper program message argument(s).
See Also “COM2”
3.9.2.1
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 ‘2’.
Defaults “COM2 2400,E,7,1”
Remarks
COM2 is generally used to allow the host computer to communicate through the RPM4-E-DWT 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 “COM1”
3.9.2.1