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ICCIIV. -


NOTICE: TO ALL CONCERNED Certain text files and messages contained on this site deal with activities and devices which would be in violation of various Federal, State, and local laws if actually carried out or constructed. The webmasters of this site do not advocate the breaking of any law. Our text files and message bases are for informational purposes only. We recommend that you contact your local law enforcement officials before undertaking any project based upon any information obtained from this or any other web site. We do not guarantee that any of the information contained on this system is correct, workable, or factual. We are not responsible for, nor do we assume any liability for, damages resulting from the use of any information on this site.
ICCIIV.2 - 2 -


model CT-17 level converter for RS232.

The interface uses a "carrier-sense, multiple-access
with collision detection" local area network protocol, so
that multiple rigs can be connected in parallel without dif-
ficulty. Thus, you can use the same RS232 line and level-
converter interface to control many rigs. Each rig must
have a unique address, which is set by internal jumpers.
Each model comes factory preset to its own address, which is
04 for the 735 and 08 for the R7000. Appendix 2 has infor-
mation on the jumper settings.

I will use the words "receive" and "send" to refer to
data transmissionhe word "rig" to mean an ICOM product using the
CI-V interface.


The rigs send and receive data in variable length pack-
ets, which are formatted as follows:

Byte # Contents

1 hex 'FE' (i.e. 11111110 binary, 254 decimal)
2 hex 'FE'
3 <RX>
4 <TX>
5 <Code>
6-n <BCD data of variable length>
n+1 hex 'FD'
CONTINUED IN FILE ICCIIV.9
 
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