This protection relay is designed to operate with a wide range of different Modbus slave units. The Modbus Master data objects allow the reception of polled data from the connected slaves; at the same time, the polled data can be read from a SCADA or RTU with other communication protocols.
The Modbus standard defines four main memory areas for mapping protection relay's process data. Due to its open nature, the Modbus standard does not define exactly what type of data should be mapped to each memory area. The mapping approach of the protection relay ensures that the data is readable from different areas used in the slave unit.