Control Command; General; Data Format; Command Table - Icom IC-R20 Instruction Manual

■ General

The IC-R20 can be connected to a PC via the PC's RS-232C
port using an optional CT-17
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
FE FE 6C E0 Cn
q w e r
IC-R20 ➡ Controller
FE FE E0 6C Cn
q e w r
. This
CI-V LEVEL CONVERTOR
Sc Data area FD
t y u
Sc Data area FD
t y u

CONTROL COMMAND

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)

■ Command table

Description
Transfers frequency data (transceive)
Transfers mode data (transceive)
Reads display frequency
Reads display mode
Sets frequency data
Sets LSB mode
Sets USB mode
Sets AM mode
Sets CW mode
Sets FM mode
Sets WFM mode
Reads squelch condition (open or closed)
Reads S-meter level
12
Cn Sc
00 —
01 —
03 —
11
04 —
12
05 —
00
01
02
06
03
05
06
01
15
02
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