[baronep]

This seems to suggest that it would be allowed...

"All electric power utilized by the Robot shall be distributed from the load terminals of the PD Board (not the M6 shanks).
The cRIO power input must be connected to the 24 Vdc supply terminals on the PD Board. With the exception of one Solenoid Breakout Board, no other electrical load can be connected to these terminals.
The wireless bridge power feed must be supplied by the 5V converter (model # TBJ12DK025Z) connected to the marked 12 Vdc supply terminals located at the end of the PD Board (i.e. the terminals located between the indicator LEDs, and not the main WAGO connectors along the sides of the PD Board). No other electrical load can be connected to these terminals (please reference any 2012 Robot Power Distribution Diagram posted on the Kit of Parts site for wireless bridge wiring information.
All other branch circuits must connect to, and have power sourced solely by, a protected 12 Vdc WAGO connector pair or the 5V supply on the PD Board.
Only one wire shall be connected to each WAGO connector on the PD Board. If multi-point distribution of circuit power is required (e.g. to provide power to the three KOP breakout boards via one 20-amp circuit), then all incoming wires must be appropriately spliced into the main lead, and only one lead inserted into the WAGO connector to connect the circuit.
"