Welcome to PI Interface for Modbus Ethernet PLC

The PI Interface for Modbus Ethernet PLC reads data from Modbus devices, such as PLCs, and writes the data to PI Data Archive.

The interface can be run on either a PI 3 server node or a PI interface node that communicates to a Data Archive. Only Modbus communication with an ethernet device is supported.

The interface is designed to read data from a PLC on a periodic or event basis, and to send output data (commands to the PLC) on an event basis. The ModbusE interface attempts to optimize scanning performance by grouping input tags with the same scan rate, PLC destination node, and function code.

For details about this release, see the Release notes.