Streamlined Control: Configure CAN Keypads with ECUMaster PMU16

In high-performance and motorsport vehicles, every second counts, and precise control over electrical components is essential. Integrating a CAN keypad with the ECUMaster PMU16 provides a seamless way to control multiple vehicle functions, from ignition and fuel pumps to lighting and fans, all from a compact, user-friendly interface. This streamlined setup reduces the need for complex wiring and enhances accessibility, making it an ideal addition to any modern build.

In this article, we’ll look at why CAN keypads are the perfect partner for the PMU16 and walk through how to configure them for your specific needs.

Why Use a CAN Keypad with the PMU16?

CAN keypads provide a compact and programmable way to control a variety of vehicle functions via a simple button interface. Unlike traditional switches, which require individual wiring for each function, CAN keypads communicate directly with the PMU16 through a single CAN bus connection, streamlining the wiring and enhancing functionality.

The benefits of using a CAN keypad with the PMU16 include:

• Reduced Wiring Complexity: Only a single CAN bus connection is needed, which minimizes wiring and clutter in the cockpit.
• Customizable Functions: Each button on the keypad can be configured to perform specific functions, including multi-function commands, toggle modes, and momentary actions.
• Compact Design: A CAN keypad takes up minimal space, making it ideal for tight or performance-focused interiors.
• Visual Feedback: CAN keypads often include customizable LED backlighting, so you can see which functions are active at a glance.

Step 1: Select Your CAN Keypad

ECUMaster USA offers several CAN keypad models that are compatible with the PMU16. Keypads typically come in various configurations, from 4 to 12 buttons or more, depending on your specific needs.

• Choose a Layout: Decide how many buttons you’ll need based on the functions you want to control.
• Check Compatibility: Ensure the keypad you select is compatible with the ECUMaster PMU16 and supports the necessary CAN protocol.

Step 2: Connect the CAN Keypad to the PMU16

Once you have selected a compatible CAN keypad, it’s time to connect it to the PMU16. CAN keypads are designed to integrate seamlessly into the CAN bus network, so you’ll only need to connect a few wires.

1. Connect CAN High and CAN Low Wires: Locate the CAN High and CAN Low connections on the keypad and wire them to the corresponding CAN bus connections on the PMU16.
2. Power and Ground: Connect the keypad’s power and ground wires to a suitable power source and ground location on your vehicle. Some PMU setups may allow you to power the keypad directly from the PMU’s outputs, depending on your setup.
3. Termination Resistors: If your CAN bus setup is over 2 meters in length, be sure to install 120-ohm termination resistors at each end of the CAN bus to maintain signal integrity.

Step 3: Configure Button Functions in the PMU16 Software

With the physical wiring complete, it’s time to configure each button’s functionality in the ECUMaster PMU16 software. This step involves assigning each button to specific outputs and setting the control type, such as toggle, momentary, or latching.

1. Open the PMU16 Software: Connect your computer to the PMU16, open the ECUMaster software, and navigate to the configuration section for CAN devices.
2. Add the Keypad as a CAN Device: Locate the CAN keypad in the software interface and add it as a new device.
3. Assign Functions to Each Button: For each button, assign a specific function, such as controlling the fuel pump, ignition, or headlights. You can configure the button type as:
• Toggle: The button toggles the output on or off each time it’s pressed.
• Momentary: The output is active only while the button is held down.
• Latching: The button alternates between on and off with each press, often used for switches like hazard lights.

Step 4: Customize Button Backlighting

Many CAN keypads offer customizable backlighting, allowing you to change colors based on button status or system feedback. This is especially useful in low-light conditions, where visual feedback helps keep track of which circuits are active.

1. Set Backlight Colors: In the PMU16 software, configure the backlight color for each button. You can assign different colors for “on” and “off” states, or even customize colors based on specific vehicle conditions.
2. Define Brightness Levels: Adjust brightness levels to match ambient lighting or specific preferences, making it easier to view the keypad under various conditions.

Step 5: Configure Multi-Function Buttons and Safety Features

The ECUMaster PMU16 supports advanced configurations, so you can set up multi-function buttons and integrate safety features like emergency shutoffs.

1. Set Up Multi-Function Buttons: Use the software to configure buttons with multiple functions. For example, a single button could toggle headlights with a single press and activate high beams with a double press.
2. Create an Emergency Shutdown Button: For added safety, set up an emergency shutdown button that can quickly disable non-essential circuits. This is especially useful in motorsport applications where swift responses are critical.

Step 6: Test and Fine-Tune the Keypad Configuration

Once all buttons are configured, it’s time to test the setup and make any necessary adjustments. Power on the vehicle and check each button’s function, ensuring it performs as expected.

1. Verify Button Functions: Press each button and confirm it activates the correct output on the PMU16. If a function isn’t working as intended, return to the software and double-check the settings.
2. Test Safety Functions: If you configured any emergency shutoffs or priority circuits, test these as well to ensure they function correctly in real-world scenarios.
3. Monitor Diagnostic Feedback: Use the PMU16’s diagnostics tools to monitor each button’s real-time status and ensure it’s receiving accurate feedback from the CAN bus.

Why CAN Keypads and the PMU16 Are a Winning Combination

The combination of a CAN keypad and the ECUMaster PMU16 brings unparalleled control, flexibility, and safety to high-performance and motorsport applications. Here are some standout benefits:

• Enhanced Driver Focus: CAN keypads allow drivers to control essential vehicle functions without taking their hands off the wheel or their eyes off the road, improving safety and focus.
• Scalable Control: As needs evolve, adding more functions or reconfiguring existing buttons is easy and requires no additional wiring.
• Customizable and Future-Ready: CAN keypads and the PMU16 are future-proof solutions, making it easy to add new controls or safety features as your build progresses.

Final Thoughts

Configuring a CAN keypad with the ECUMaster PMU16 offers a streamlined and customizable approach to vehicle control, ideal for motorsport applications where every millisecond counts. By integrating a CAN keypad, you simplify your wiring setup, improve accessibility, and enable real-time control of essential functions.

For more details on setting up the PMU16 with a CAN keypad or to explore compatible products, visit ECUMaster USA or consult with a professional installer.