Wiring the Pneumatic Hub or PCM

Powering the Module#

Per WPILib's wiring guide, the REV Pneumatic Hub is powered from 12V on the PDP/PDH. The first PH can use the dedicated VRM/PCM connectors on the end of a PDP, or a 15A or 20A port on the PDH (20A recommended if it is running a compressor). Additional hubs connect to a standard WAGO connector on a PDP protected by a 20A-or-smaller breaker, or a 15A PDH port. The compressor's current draw is why the 20A port is recommended.

CAN Bus#

The module joins the CAN chain like any other CAN device — it can sit anywhere in the middle of the chain, or on the end with a terminating resistor. Confirm its CAN ID in software: the PH defaults to ID 1, the PCM to ID 0.

Compressor Output#

Wire the compressor directly to the module's Compressor output terminals. If you need to extend the leads, use 18 AWG or larger wire. The PH can supply up to 15 A continuous on this output.

Pressure Feedback#

• Digital switch: connects to the pressure-switch input; polarity does not matter.
• Analog sensor (REV-11-1107): wires to one of the PH's analog pressure sensor ports — follow REV's pinout carefully since it carries 5V power and a signal line.

Solenoid Channels and Voltage#

Set the PH's 12V/24V voltage switch to match your solenoids before powering up — and remember every solenoid on the module must be the same voltage. A single (single-acting) solenoid uses one channel (one terminal pair); a double (double-acting) solenoid uses two channels (two pairs). Each channel supplies up to 200 mA. Wire each solenoid directly to its numbered terminal pair on the Hub.

Bench Test Without a roboRIO#

The PH's USB-C port plus the REV Hardware Client lets you fire solenoids and run the compressor on the bench before robot code exists. For the PCM, use Phoenix Tuner / Tuner X to bring it up. This is the fastest way to confirm wiring is correct before you write a line of robot code.

Sanity Checklist#

Power on the correct breaker, CAN ID confirmed, compressor on the compressor terminals, pressure feedback connected, voltage switch set, single solenoids on one channel and double solenoids on two. Get these right and the software step becomes trivial.