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- How to transfer a Location between End Users
- Installation Checklist
- Resolving fallback waiting error (for Installers only)
- How to commission a NexBlue Charge Point
- How to connect charge point to 4G during/after installation
- How to create and manage Locations
- What is a Location and why is it important?
- How to transfer ownership to customer (NexBlue Partner App)
- Phase rotation
- Fallback waiting error
- Where is the pin for my charge point/Zen?
- How to make a charge point tethered (lead stays plugged in)
- How to change brightness of charge point light
- How to add a charge point/load balancer to your Location
- How to commission a NexBlue Charge Point
- How to connect charge point to 4G during/after installation
- RCD Test Procedure
- How to check if a product has been encountering any unexpected behavior
- Residual Current Protection
- Phase rotation
- Connect the NexBlue Zen (Load Balancer) to the NexBlue Cloud
- Fallback waiting error
- Where is the pin for my charge point/Zen?
- Resolving fallback waiting error (for Installers only)
- How to add a charge point/load balancer to your Location
- How to use solar energy to charge your car
- How to check if a product has been encountering any unexpected behavior
- How to Connect the NexBlue Zen (Smart Meter) to Wi-Fi
- Integrate solar panel terminal with Load balancer
- How to add a Location thats been shared with you
- Where is the pin for my charge point/Zen?
- How to share a location with an individual/organisation
- How to create/join/invite someone to an Organisation
- How to connect charge point to 4G during/after installation
- How to carry out a factory reset of a product
- How to create and manage Locations
- How to check if a product has been encountering any unexpected behavior
- Charging status
- Phase rotation
- How to transfer ownership to end customer (Partner Portal)
- Pre-configuration: Remotely complete the installation configuration on the portal
- Does every new installer need to get a username and password?
- How to change the main fuse on the Partner Portal？
- How to transfer a Location between End Users
- How to connect a charger to WiFi
- Exporting charging data
- Connect the NexBlue Zen (Load Balancer) to the NexBlue Cloud
- Fallback waiting error
- Where is the pin for my charge point/Zen?
- How to make a charge point tethered (lead stays plugged in)
- How to change brightness of charge point light
- How to add a charge point/load balancer to your Location
- How to connect to your tariff (EcoPilot)
- How to set max charging current
- How to set the charging schedule
- Someone else wants to use my charge point, how can I share it with them?
- How to use solar energy to charge your car
- How to add a charge point in the myNexBlue App
- How to Connect the NexBlue Zen (Smart Meter) to Wi-Fi
- How to configure single phase charging?
- Charger or Load Balancer Not Connecting via Bluetooth
- Firewall Requirements for NexBlue Charge Points
- Resolving fallback waiting error (for Installers only)
- Why have I received an email alert about my charge point(s)?
- My charge point is switched on but the light on the unit is not on
- RCD Test Procedure
- Event List
- How to check if a product has been encountering any unexpected behavior
Understanding the NexBlue Dual-Link Control System Architecture
Table of Contents
Overview
The NexBlue Dual-Link Control System Architecture enables each charger to maintain two simultaneous communication connections. This ensures reliable operation, real-time control, and compatibility with third-party platforms.
This article explains how the dual-link system works and what it means for your installation.
How the Dual-Link System Works
Each NexBlue charger connects to two platforms at the same time:
- Third-Party OCPP CMS (Charge Management System)
- NexBlue Cloud Platform
These connections operate independently but simultaneously, providing both management functionality and advanced real-time features.
Connection Types Explained
1. Local/Native OCPP Connection
- Connects chargers to a third-party CMS using the standard OCPP (Open Charge Point Protocol).
- Handles:
- Charging sessions and transactions
- Billing and user management
- Load management (depending on CMS capabilities)
ℹ️ Note: This connection may require higher-performance hardware for full local processing.
2. NexBlue MQTT Connection
- Connects chargers to the NexBlue Cloud Platform using a proprietary MQTT protocol.
- Enables:
- Real-time monitoring and control
- Remote diagnostics
- Over-the-air (OTA) firmware updates
✅ This connection runs in parallel with OCPP and does not interfere with third-party integrations.
Key Benefits
- Dual Connectivity: Use a third-party CMS without losing NexBlue cloud features
- Real-Time Control: Faster response via MQTT connection
- Enhanced Reliability: If one connection is limited, the other may still function
- Future-Proofing: Supports advanced features like OTA updates and diagnostics
Typical Deployment Setup
- Multiple chargers are installed in a single loop or cluster.
- Each charger independently connects to:
- The third-party CMS (via OCPP)
- NexBlue Cloud (via MQTT)
This ensures consistent performance across all devices in the installation.
Troubleshooting
Charger Not Visible in Third-Party CMS
- Check OCPP configuration settings (URL, credentials)
- Ensure network connectivity is stable
Missing Real-Time Data in NexBlue Cloud
- Verify internet connection
- Check if MQTT connection is active
- Ensure firewall settings allow required communication
FAQs
Q: Can I use only one of the connections?
A: Yes, but using both connections is recommended to access full functionality.
Q: Does MQTT replace OCPP?
A: No, MQTT complements OCPP by adding real-time control and diagnostics.
Q: Will using a third-party CMS limit NexBlue features?
A: A small number of features are limited, for example schedule and RFID links created in NexBlue system will not be applicable
Updated on 23 Apr 2026