Modbus

The product is equipped with two Modbus interfaces. One interface can be controlled via Ethernet (Modbus TCP) and the other interface via RS485 (Modbus RTU).

The Modbus interfaces have the following tasks:

  • Remote query of measured values

  • Setpoint specifications for system control

The Modbus interfaces differ in their function as:

  • Modbus server and

  • Modbus client.

The function of the Modbus server is available via the Ethernet interface (Modbus TCP). The Modbus server can be used for external access to the product (e.g. via SCADA systems).

The function of the Modbus client is available via the Ethernet interface (Modbus TCP) and the RS485 interface (Modbus RTU). The Modbus client can be used for communication with connected Modbus devices (e.g., inverters, energy meters, I/O systems).

For the communication with connected Modbus devices, predefined Modbus profiles and user-created Modbus profiles can be used. User-created Modbus profiles can be exported and transferred to another product.

    SMA Speedwire
    SunSpec Modbus