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Solis

Solis Energy Storage Inverters

For the inverter compatibility list, see FlexiO compatible inverters & charging stations.

IMPORTANT: the Solis Modbus cable (product number LMS) has been discontinued.
Use Solis DataLogger S2-WL-ST (Modbus TCP) instead (not sold by LIFEPOWR).

In this section you’ll find instructions on how to integrate FlexiO with Solis Energy Storage Inverters.

This guideline provides instructions for connecting the FlexiObox and configuring FlexiO.
For detailed hardware instructions, see the individual battery and inverter manuals of the manufacturer.

1. Modbus Support

LIFEPOWR recommends the Solis datalogger S2 WL ST, as this supports all Solis models.

Some models also support a serial (RTU) connection, this is noted below. The Solis Modbus cable (product number LMS) has been discontinued as we prefer the Solis datalogger.

1.2. Solis Datalogger S2 WL ST

Supported models

  • RHI

  • RAI

  • S5-EH

  • S6-EH3P

The connection between FlexiObox and Solis inverter will be established through the local network, using the Solis datalogger S2 WL ST (Solis Dual LAN & WIFI Stick).

image-20250130-132919.png

  • Strongly recommened to connect the datalogger with an UTP cable to establish a wired internet connection for the inverter. A wifi connection is possible however subject for less qualitative and less stable connection.

  • The datalogger will send data to SolisCloud and FlexiO combined.

  • Important to upgrade the Solis datalogger to firmware 100101a3.
    A firmware upgrade needs to be requested at Solis support. Unfortunately at this moment it is not possible to execute this as 3rd party.

1.3. Alternative: Serial (RTU) connection

Supported models

  • S6-EH3P

The connection between FlexiObox and Solis inverter will be established by a serial cable (SFTP) that you need to adapt and a LMGS adapter which you can find in the Lifepowr webshop.

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1.3.1. Adapt SFTP cable

Depending on the model, the wires need to be connected differently.

S6-EH3P (5-10)K and S6-EH3P (30-50)K

Strip one side of the SFTP cable and attach a new RJ45 connector connecting only Blue to pin 1 and Blue/white to pin 2

image-20250130-193131.png
S6-EH3P (12-20)K

Strip one side of the SFTP cable and attach a new RJ45 connector connecting only Orange/White to pin 1 and Orange to pin 2

image-20250130-195240.png

1.3.2. Connection to the inverter and FlexiObox

  • Insert the standard side of the SFTP cable (8 wires) into the RS485 port of the inverter

  • Connect the adapted RJ45 connector (2 wires) into the LMGS adapter

  • Insert the USB side of the LMGS adapter in one of the 4 USB-ports of the FlexiObox

image-20250130-194353.png

2. Solis Brand documents

3. Technical support

Visit the support page.

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