America Inc. Two-Way Radio User Manual

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.

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 (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

FE FE 6C E0 Cn Sc Data area FD

q wert y u

FE E0 6C Cn Sc Data area FD

q ewrt 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

Sets USB mode 01

Sets AM mode 02

Sets CW mode 03

Sets FM mode 05

Sets WFM mode

Reads squelch condition (open or closed)

Reads S-meter level