Digital Addressable Lighting Interface: Difference between revisions

Revision as of 23:11, 27 November 2006

Revision as of 01:26, 30 November 2006

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*It only requires one [[electrical bus|bus]] wire for up to 64 devices.

*Because it uses [[Differential Manchester encoding]] it doesn't matter which way around the signal cable is wired, this makes installation more [[foolproof]].

*It doesn't insist the cabling is a "daisy-chain", "stars" and "T's" are perfectly acceptable giving the installers flexabilityflexibility

== Disadvantages ==

*Each device gives itself a random number to identify itself, which makes initial installation and replacing faulty devices confusing as there is no indication which device is which, until the operator sends out test signals and looks to see which device responds. *Being restricted to 64 addresses (six [[bit]]s), DALI cannot be used in large installations without using another technology to [[workaround]] the limitation.

*It'sIts slow communication speed (1200 [[baud]]) can mean a visablevisible delay in large installations with a lot happening.

*It'sThe eeprom[[EEPROM]] thatwhere itpresets stores it's presetsare instored can only be rewritten 100 times

*There are few affordable portable test tools for it.