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7i77 – Trying to understand TB2

Pin 1 – VFIELD – FIELD Power 8-32V
Pin 2 – VFIELD – FIELD Power 8-32V
Pin 3 – VFIELD – FIELD Power 8-32V
Pin 4 – VFIELD – FIELD Power 8-32V
Pin 5 – VIN – FIELD I/O Logic Power 8-32V
Pin 6, 7 – NC
Pin 8 – Ground – COMMON

So – are pins 1-4 common to each other, not common and can be supplied 
different voltages, common but redundant to allow for greater current transfer. 
Everyone I have ask has given completely different and conflicting answers.
Since I have no idea what the encoder current draw will be I will be supplying 
TB1 with its own 5V powersupply and thus W1 will short the 2 pins on the right 
(farthest from the DB25) I have a second 24V powersupply which I have wired to 
each pin 1-5 with ground on pin 8.
My notes show I did this wiring 12/3/17 and have yet to actually power it up as 
have yet to obtain a clear definitive answer as to if this is proper or a 
potential smoke machine.

Greg

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