Fastwel Modbus OPC Server is a Windows application providing OPC Data Access interface for Modbus RTU/ASCII and Modbus TCP networks. On the fieldbus side Fastwel Modbus OPC Server acts as Modbus master and is able to perform reading and writing operations on Modbus slave devices. Server can interact with Modbus RTU/ASCII and Modbus TCP devices simultaneously and supports the following types of data objects defined by Modbus protocol application layer:

• Input Register - read only 16-bit data located in the output area of Modbus slave device
• Holding Register - 16-bit data object in the input area of Modbus slave device, available    both for reading and writing
• Discrete Input 1-bit read only data located in the output area of Modbus slave device.
• Coil - 1-bit data object in the input area of Modbus slave device, available both for reading and writing

Fastwel Modbus OPC Server supports OPC Data Access 2.0 specification and can be used with various HMI/SCADA packages.

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