Victron Open-Loop Configuration
Whenever possible, using a closed-loop configuration is recommended with Discover batteries and Victron devices. However, using an open-loop configuration may be required if the closed-loop communication system encounters an issue, such as a failure of the LYNK II gateway, cables or connections, or the Victron device.
In such cases, you may have to set the system to open loop until the issue is resolved. The following describes how to set up open loop on Victron devices.
Setting up Open Loop on Victron Devices
You will need the latest firmware on all connected devices. The following presumes familiarity with VE Configure software. After setting the voltage-based open-loop parameters using the VE Configure 3 software, ‘send’ all parameters to the inverter-charger and GX device and then restart the GX device.

VE Configure 3 Software