Code:
48 points of isolated field I/O are provided for general control use including limit
switch and control panel inputs, coolant enable and tool changer control outputs. Isolated
I/O includes 32 sinking inputs and 16 sourcing (7I76E) or sinking (7I76ED) outputs. Inputs
can sense 5V to 32V signals and the outputs can switch 5V through 32V signals.
Maximum output load is 350 mA. Outputs are short circuit protected.
It has sinking outputs instead of sourcing ones on 7i76E.
sourcing outputs = the outputs provide +VCC when on, so the relays/solenoids/LED's have a common ground and the Mesa outputs provide the positive voltage when turned on.
sinking outputs = the outputs sink to ground level when on, so the relays/solenoids/LED's have a common +VCC (12 or 24V positive) and the mesa outputs provide GND/ground/0V when on.
