Yes, if you have a Modbus Plus adapter card in your computer, you can run an OPC server to get data from the PLC. The cards are available in PCI, ISA, and PCMCIA versions, with drivers for all Windows versions. Modicon offers an OPC server, called OFS (OPC Factory Server) which can talk serially, over Modbus Plus, or Modbus/TCP ethernet.
Yes, sure is possible. You only need to add on the computer a SA85 board (provided by modicon). Then you will need the software to manage the data. Regards
