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CONTROL COMMAND
•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. 73 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-756PROII
FE FE 64 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 64 FB FD
FE FE E0 64 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-756PROII to controller
qwert y u
FE FE E0 64 Cn Sc Data area FD
qwert y u
■ Remote jack (CI-V) information
9–15 V
DC
personal
computer
ct- 17
BC-25
(optional)
IC-756PROII
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 frequency data
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
B0 Exchange main and sub readouts
B1 Equalize main and sub readouts
C0 Turn the dualwatch OFF
Command Sub command Description
07 C1 Turn the dualwatch ON
D0 Select main readout
D1 Select sub readout
08 — Select memory mode
0001–0101*
1
Select memory channel
*
1
P1=0100, P2=0101
09 — Memory write
0A — Memory to VFO
0B — Memory clear
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