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CONTROL COMMAND
2001 NEW
• CI-V connection example
The transceiver can be connected through an optional
CT-17
CI-V LEVEL CONVERTER
to a personal computer
equipped with an RS-232C port. The Icom Communi-
cations Interface-V (CI-V) controls the following func-
tions of the transceiver.
Up to 4 Icom CI-V transceivers or transceivers can be
connected to a personal computer equipped with an
RS-232C port. See p. 87 for setting the CI-V condition
using set mode.
• Data format
The CI-V system can be operated using the following
data formats. Data formats differ according to com-
mand numbers. A data area or sub command is added
for some commands.
Controller to IC-7400
FE FE
66
E0
Cn
Sc
Data area
FD
Preamble
code
(fixed)
Transceiver
’s
default address
Controller
’s
default address
Command number
(see the command table)
Sub command number
(see command table)
BCD code data for
frequency or memory
number entry
End of message
code
(fixed)
OK message to controller
FE FE
E0
66
FB
FD
FE FE
E0
66
FA
FD
Preamble
code
(fixed)
Controller
’s
default address
Transceiver
’s
default address
OK code
(fixed)
End of message
code
(fixed)
NG message to controller
NG code
(fixed)
IC-7400 to controller
q
w
e
r
t
y
u
FE FE
E0
66
Cn
Sc
Data area
FD
q
w
e
r
t
y
u
■
Remote jack (CI-V) information
9–15 V
DC
personal
computer
ct- 17
BC-25
(optional)
IC-7400
mini-plug cable
• Command table
Command
Sub command
Description
00
—
Send frequency data
01
Same as
Send mode data
command 06
02
—
Read band edge frequencies
03
—
Read operating frequency
04
—
Read operating mode
05
—
Set operating frequency
06
00
Select LSB
01
Select USB
02
Select AM
03
Select CW
04
Select RTTY
05
Select FM
07
Select CW-R
08
Select RTTY-R
07
—
Select VFO mode
00
Select VFO A
01
Select VFO B
A0
Equalize VFO A and VFO B
Command
Sub command
Description
07
B0
Exchange VFO A and VFO B
08
—
Select memory mode
0001–0101*
Select memory channel
*P1=0100, P2=0101
0102
Select the call channel
09
—
Memory write
0A
—
Memory to VFO
0B
—
Memory clear
0C
—
Read offset frequency
0D
—
Set offset frequency
0E
00
Scan stop
01
Programmed/memory scan start
02
Programmed scan start
03
∂
F scan start
12
Fine programmed scan start
13
Fine
∂
F scan start
22
Memory scan start
23
Select memory scan start
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