CZone & NMEA2000 Integration Guide

How to show your TITAN Lithium battery on a CZone (Mastervolt) system, Raymarine displays and any standard NMEA2000 network.

Why use NMEA2000?

Your battery on the displays you already have. Every TITAN Lithium battery with comms ports can broadcast live data over NMEA2000 - voltage, current, state of charge and temperature. Drop the battery onto your boat's N2K backbone and it appears as a native battery source on your CZone panels, chartplotter and instruments. No extra shunts, no separate monitor, no guesswork.

  • Confirmed CZone compatibility: tested and working with CZone (Mastervolt) digital switching systems.
  • Works with Raymarine: Axiom and other Raymarine MFDs accept the standard NMEA2000 battery data the battery sends, with no vendor setup.
  • Standard N2K output: any device that accepts standard NMEA2000 battery inputs can read the battery.
  • Read-only by design: your network can see everything the battery reports, but nothing on the network can write to the TITAN BMS. Monitoring without risk.

Before you start: instance ID

NMEA2000 devices identify battery sources by instance ID. The TITAN NMEA2000 output ships configured with one of two instance IDs, set in firmware before dispatch:

  • Instance ID 101 - the CZone default. Use this for CZone / Mastervolt systems.
  • Instance ID 0 - generic NMEA2000. Raymarine and most MFDs accept either.

Ordering for a CZone system? Tell us at order time and we will ship the battery set to instance ID 101. Already have the battery? Contact us - the instance ID is a firmware setting and we can arrange the change for you.

What you'll need

  • TITAN Lithium battery with comms ports - any model in the current range.
  • TITAN NMEA2000 drop cable - RJ45 on the battery end, NMEA2000 micro-C male on the backbone end. Supplied on request - ask when ordering.
  • Powered NMEA2000 backbone - with 120 ohm terminators at both ends and a free tee connector for the battery drop.
  • CZone Configuration Tool on a PC (CZone installs only), or an NMEA2000 display such as a Raymarine MFD.

How to connect

Step 1 - Plug in

  • Connect the RJ45 end of the TITAN N2K drop cable into the battery's data port (RJ45-2 or RJ45-3 - on the top for 230Ah+ or the side for 105Ah-180Ah).
  • Connect the micro-C end into a free tee on the NMEA2000 backbone.

Step 2 - Check the backbone

  • Confirm the backbone has its own 12V network power and a 120 ohm terminator at each end. The battery only sends data - it does not power the network.

Step 3 - Wake the comms section

  • Connect to the battery's Bluetooth once via the TITAN Lithium app (see the TITAN App page). This wakes the comms section of the BMS so data flows on the network. A live comms connection keeps it awake from then on.

CZone configuration

With the battery on the backbone and set to instance ID 101, configure the battery meter using the CZone Configuration Tool on a PC connected to the network.

  1. Install the CZone Configuration Tool and its network interface driver on your PC.
  2. On the Meters tab, click Read Config From Network to load the current system configuration.
  3. Open the DC battery meter assigned to your leisure bank and set its instance to 101, then confirm with OK.
  4. In Battery Configuration, set the capacity to the rated capacity of your TITAN battery (for example 240Ah for the LFP-240). For parallel banks, enter the combined capacity.
    • CZone uses this figure for its own time-remaining and percentage calculations on some displays, so enter the real rated capacity of the connected bank.
  5. Click Write Config to Network to apply the settings to the system.

Raymarine and other displays

Raymarine MFDs accept standard NMEA2000 battery data with no vendor configuration.

  1. Open the MFD's data sources or DC page.
  2. Select the TITAN battery as a DC source. If your MFD lists sources by instance, pick the instance your battery shipped with.
  3. Add voltage, current and state of charge to your dashboards as normal.

The same applies to other brands that accept standard N2K battery inputs. If a display cannot see the battery, check that brand's instance conventions or contact us.

Verification

  1. Confirm the battery appears as a DC or battery source on the CZone display or MFD.
  2. Check live voltage, current, state of charge and temperature against the TITAN app.
  3. Apply a known load and confirm the current reading moves on the display.

Troubleshooting

  • Battery not on the network? Check the backbone is powered and terminated at both ends, the drop cable is fully seated, and that you have connected to the battery once via the TITAN app to wake the comms section of the BMS.
  • Battery visible but CZone will not show it? Almost always the instance ID. CZone expects instance 101 on battery meters. Confirm the battery shipped with the CZone firmware, or contact us to arrange the change.

Technical data (for installers)

  • Communication protocol: NMEA2000 (CAN-based, 250 kbit/s)
  • Data reported: voltage, current, state of charge, temperature
  • Instance ID: 101 (CZone) or 0 (generic N2K), set in firmware before dispatch
  • Direction: read-only - no device on the network can write to the TITAN BMS
  • Battery-side connector: RJ45 (CAN-H pin 5, CAN-L pin 6). Network-side connector: NMEA2000 micro-C male
  • Network power: supplied by the backbone, not the battery drop

Download the install walkthrough (PDF) →

Running a Victron system instead?

If your boat or van runs Victron, use the CAN-bus link for full system control rather than monitoring only - see the Victron Energy Integration Guide.