![]() ![]() These values must not be used as adresses.Įach Icom model has it’s own, distinct default adress. 0xFA – 0xFF: Reserved for protocol functions such as frame delimiters, Ok, Not-Good, collision signals, empty memory etc.But to my knowledge no rig really cares where the messages come from, so any adress could be used as from-adress. ![]() 0圎0: Reserved for the controller, i.e.0x00: Used as to-adress, means all connected rigs.Īny rig with CI-V Transceive set to on should react to commands adressed to 0x00.Īny rig with CI-V Transceive set to on adresses it’s messages to 0x00 when tuning the dial, changing mode etc.There are some reserved adresses with special meaning: Values 0xFA to 0xFF are reserved for special protocol functions. But then there are the odd addresses which haven’t been used at all in amateur radio products. With a rate of 1 to 2 new rigs per year that leaves room until 2036 or so □. Now (Spring 2023) we are at address 0xAC (IC-905). But Icom has been happily using addresses above the originally specified range without any issue. That range was exhausted in 2010 with the IC-9100. The ‘Icom CI-V Reference Manual (3rd edition)’ from 1991 specified the adress range from 0x01 to 0x7F. To-adress is the 3rd byte in a frame, from-adress the 4th byte. ![]()
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