The ModbusLink is a Modbus slave application designed to be a link between OPC servers and devices that implement the Modbus master protocol. The ModbusLink is a virtual PLC Modbus slave device that can connect to a multiple number of OPC sources to retrieve data. Acquired data is stored in the Modbus address space of the ModbusLink virtual slave device to be retrieved by any Modbus master device. The OPC Modbus Slave Link application implements the Modbus RTU and ASCII slave protocols for serial ports and Modbus over TCP/IP for Ethernet ports.
The CEMView Data Acquisition System can use the ModbusLink application to provide Modbus slave functionality to reveal all the data to any Modbus master device.