I probably should have phrased my question better - because the ultimate answer is a no - I was wondering whether there was a fully fledged Cybertronian language, both spoken and written as there is (at least my impression is that there is) Klingon (I remember reading on Gizmodo about a father who taught his child nothing but Klingon as language during its first few years of life - which is taking things a bit far). But there is an alphabet - is it consistent across continuities - just looking at the article linked to by Goktimus, it seems the alphabet has been developed in the Transformers Animated series of recent years (which I have yet to watch - one of these days).