Re: IEC bus specification

From: Chris Osborn <>
Date: Tue, 31 Dec 2013 11:34:03 -0800
Message-Id: <>
On Dec 31, 2013, at 11:29 AM, Gábor Lénárt <> wrote:

> What is odd for me: the document talks about "true" and "false" and stating
> that "true" is actually pulled low (0V). It's OK, however on the graph
> later, it talks about "low" and "high". Now I am confused, so "low" means
> about the voltage, so actually high=false, low=true .... ? Quite hard to
> understand anything this way, when even the usage of notions is not
> consistent :(

Yep, true/false really has no meaning at all with the way the bus works. The document should have stuck with saying high/low everywhere.
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Received on 2013-12-31 20:02:22

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