<R78> Opto-isolation?
I just want to verify that opto-isolation is NOT an allowable workaround for this rule.
For example, the LED driver on one of the OI ports can be used to drive the LED in an opto isolator. This is the only component in the optoisolator connected to the OI port. It is the only thing that can be powered by the OI port...the only thing drawing current.
The output side of the opto-isolator (transistor) is not connected electrically to the OI port. I can be used to drive an external circuit that may contain a battery.
A useful application would use the 8 available LED driver pins to drive 8 opto-isolated circuits that could be used for indicators in a dashboard built onto the portable operator station. 12V lamps are much brighter and easier to see than LEDs on the OI.
Are we allowed to use opto-isolators as stated above?
Regards,
ChuckB, Team 342
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