On Mon, 8 Jul 2002, Gabriel Caffese wrote:

>Hello everyone,
>
>   I would like you to tell me wich are the the most important reasons why
>a PIC microcntroller would (or would not) be able to replace a PLC.
>   For example, supose the need for replacing the semaphore PLC control in
>a city.

High reliability/danger applications require a style of hardware and
software that is approved for that kind of environment, including
continuous self-testing, safe failing etc etc. PLCs used for this have
that. PICs do not afaik. Ever seen a traffic light stuck on green ? I
haven't.

Peter

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