Icom IC-R20 Instruction Manual - Page 81

Control Command

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12 CONTROL COMMAND ■ General The IC-R20 can be connected to a PC via the PC's RS-232C port using an optional CT-17 CI-V LEVEL CONVERTOR. This allows you to control the receiver from the PC and/or transfer data from the receiver to the PC. Control is provided via Icom's CI-V Communication Interface. q Preamble code (fixed) w Receiver's default address e Controller's default address r Command number (see table below) t Sub command number (see table below) y BCD code data for frequency entry u End of message code (fixed) An appropriate application for CI-V command is not supplied from Icom. ■ Data format ■ Command table Description Transfers frequency data (transceive) Transfers mode data (transceive) Cn Sc 00 - 01 - The CI-V system can be operated using the following data formats. Data formats differ according to command numbers. A data area is added for some commands. Reads display frequency Reads display mode Sets frequency data 03 - 04 - 11 05 - 12 Controller ➡ IC-R20 FE FE 6C E0 Cn Sc Data area FD q wert y u Sets LSB mode Sets USB mode Sets AM mode Sets CW mode 00 01 02 06 03 IC-R20 ➡ Controller FE FE E0 6C Cn Sc Data area FD q ewrt y u Sets FM mode Sets WFM mode Reads squelch condition (open or closed) Reads S-meter level 05 06 01 15 02 68

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68
12
CONTROL COMMAND
11
12
■
General
The IC-R20 can be connected to a PC via the PC’s RS-232C
port using an optional CT-17
CI-V LEVEL CONVERTOR
. This
allows you to control the receiver from the PC and/or transfer
data from the receiver to the PC.
Control is provided via Icom’s CI-V Communication Interface.
An appropriate application for CI-V command is not sup-
plied from Icom.
■
Data format
The CI-V system can be operated using the following data
formats. Data formats differ according to command numbers.
A data area is added for some commands.
Controller
➡
IC-R20
IC-R20
➡
Controller
q
Preamble code (
fi
xed)
w
Receiver’s default address
e
Controller’s default address
r
Command number (see table below)
t
Sub command number (see table below)
y
BCD code data for frequency entry
u
End of message code (
fi
xed)
■
Command table
FE
FE
6C
E0
Cn
Sc
Data area
FD
q
w
e
r
t
y
u
FE
FE
E0
6C
Cn
Sc
Data area
FD
q
e
w
r
t
y
u
Description
Cn
Sc
Transfers frequency data (transceive)
00
—
Transfers mode data (transceive)
01
—
Reads display frequency
03
—
Reads display mode
04
—
Sets frequency data
05
—
Sets LSB mode
06
00
Sets USB mode
01
Sets AM mode
02
Sets CW mode
03
Sets FM mode
05
Sets WFM mode
06
Reads squelch condition (open or closed)
15
01
Reads S-meter level
02