Edge-2-Edge

Enables Edge-to-Edge connection of devices from a slave OpenEMS Edge via Modbus. This requires Controller Api Modbus/TCP Read-Write to be active on the slave system, e.g. via the FEMS App Modbus/TCP Schreibzugriff for a FENECON Energy Storage System.

Implementations:

  • Edge2Edge.Ess

Example application

  • Setup a 'Slave' OpenEMS Edge instance, that controls one or more energy storage systems

    • Component-ID of the energy storage system or the ESS-Cluster is ess0

    • Activate Controller Api Modbus/TCP Read-Write and add ess0 to the configured component_ids

At this point you can open OpenEMS UI and check the system profile under settings. Click on the ctrlApiModbusTcp0 component and download the generated Modbus/TCP register table. You should find ess0 listed there. An example Excel file can be found here: https://github.com/OpenEMS/openems/tree/develop/io.openems.edge.controller.api.modbus/doc
This is the setup you will find after purchasing a "FEMS App Modbus/TCP Schreibzugriff" for a FENECON Energy Storage System

  • Setup a 'Master' OpenEMS Edge instance.

    • Configure Bridge Modbus/TCP:

      • id: modbus0

      • ip: IP-Address of the Slave instance

    • Configure Edge-2-Edge ESS:

      • id: ess0

      • remoteAccessMode: AccessMode.READ_WRITE (for default Read-Only access this would be AccessMode.READ_ONLY)

      • remoteComponentId: ess0

      • modbus_id: modbus0

    • Now you are able to access the remote energy storage system as if it was connected locally, e.g. configure a Controller Ess Fix Active Power on ess0 to set a fixed charge or discharge command.

Source Code