Hi.  I wonder what I'm missing on a very simple brain?  I'm trying to engage a power drawbar.  I have a button on the main page that lights up User LED 1000.  A LED beside the button reflects the state.  A brain should watch the LED and turn on a Modbus address when the led is on.

When I View Brain for the brain, the UserLED 1000 turns green when I click the button, but the comparator block (which says "Compare Imm.  I = 1.0000") does not turn green, it stays blue.  I've tried comparing to 0 with the same result, and also did a > 0.5, still nothing.  I can't make the comparator block output True.

Any advice?  I'm really stuck.

Do it straight thru with no comparitor.

It should work that way,(;-) TP