FT-450D CAT O
PERATION
R
EFERENCE
B
OOK
CAT
(C
OMPUTER
A
IDED
T
RANSCEIVER
)
O
PERATION
C
ONTROL
C
OMMAND
A computer control command is composed of an alpha-
betical command, various parameters, and the terminator
that signals the end of the control command.
Example
: Set the VFO-A frequency to 14.250000 MHz.
FA
14250000
;
Command
Parameter
Terminator
There is three for the
FT-450D
Command as shown below:
Set
command: Set a particular condition
(to the
FT-450D
)
Read
command: Reads an answer
(from the
FT-450D
)
Answer
command: Transmits a condition
(from the
FT-450D
)
For example, note the following in the case of the FA com-
mand (Set the VFO-A frequency):
To set the VFO-A frequency to 14.250000 MHz, the
following command is sent from the computer to the
transceiver:
“
FA14250000;
” (Set command)
To read the VFO-A frequency, the following command
is sent from the computer to the transceiver:
“
FA;
” (Read command)
When the Read command above has been sent, the
following command is returned to the computer:
“
FA14250000;
” (Answer command)
Alphabetical Commands
A command consists of 2 alphabetical characters.
You may use either lower or upper case characters. The
commands available for this transceiver are listed in the
“PC Control Command Tables” on the following pages.
Page 2
Parameters
Parameters are used to specify information necessary to
implement the desired command.
The parameters to be used for each command are prede-
termined. The number of digits assigned to each param-
eter is also predetermined. Refer to the “Control Com-
mand List” and the “Control Command Tables” to con-
figure the appropriate parameters.
When configuring parameters, be careful not to make the
following mistakes.
For example
, when correct parameter is “
IS0+1000
” (IF
SHIFT):
IS01000
;
Not enough parameters specified (No direction (+)
given for the IF shift)
IS0+100
;
Not enough digits (Only three frequency digits
given)
IS0
_
+
_
1000
;
Unnecessary characters between parameters
IS0+10000
;
Too many digits (Five frequency digits given)
Note
: If a particular parameter is not applicable to the
FT-
450D
, the parameter digits should be filled using any char-
acter except the ASCII control codes (00 to 1Fh) and the
terminator (
;
).
Terminator
To signal the end of a command, it is necessary to use a
semicolon (
;
). The digit where this special character must
appear differs depending on the command used.
