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

FE

 

FE

6C

E0

Cn

Sc

Data area

FD

 

 

 

 

 

 

 

 

 

 

q

w

e

r

t

y

u

IC-R20 Controller

 

 

 

 

 

 

 

 

 

 

 

 

 

FE

 

FE

E0

6C

Cn

Sc

Data area

FD

 

 

 

 

 

 

 

 

 

 

q

e

w

r

t

y

u

CONTROL COMMAND 12

qPreamble code (fixed)

wReceiver’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

Cn

Sc

 

 

 

Transfers frequency data (transceive)

00

 

 

 

 

 

 

 

 

 

Transfers mode data (transceive)

01

 

 

 

 

 

 

 

 

 

Reads display frequency

03

 

 

 

 

 

 

 

11

Reads display mode

04

 

 

 

 

 

 

 

 

 

 

 

12

Sets frequency data

05

 

 

 

 

 

 

 

Sets LSB mode

 

00

 

 

 

 

 

 

 

 

 

Sets USB mode

 

01

 

 

 

 

 

 

 

 

 

Sets AM mode

06

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

68

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Image 81
Icom IC-R20 instruction manual Control Command, Data format, Command table