[Kevin Sevcik]

Originally Posted by 1075guy

Looks to me like <R62> DOES indeed prohibit it. I can't see why it wouldn't be electrically possible to do though.

EDIT: I suspect <R62> prohibits it because the USER processor directly controls the Dig I/O lines I think, whereas the Relay/PWM ports are controlled by the Master processor, which locks them out when disabled.

The relay lines are controlled by the User processor as well, much like PWMs 13-16. The PWMs and Relay lines are just sent through buffers that are enabled/disabled by the master processor. So yes, the reason it's illegal is because the relays couldn't be disabled directly by the master processor anymore.