There are several ways to interface SIXNET controllers, RTUs and I/O to Intellution's FIX32 or Dynamics HMI software.

• Modbus OPC/DDE Server: SIXNET offers a free OPC/DDE to Modbus Server. This server use the Modbus protocol to communicate over Ethernet or serial connections to SIXNET stations. It then makes the I/O available to any client software that supports OPC (v1.0), DDE, FastDDE, or AdvancedDDE.
  
• SIXNET OPC/DDE Server: SIXNET also offers an OPC/DDE to SIXNET Server. This server use the advanced SIXNET protocol to communicate over Ethernet or serial connections to SIXNET stations. It then makes the I/O available to any client software that supports OPC (v2.0), DDE, FastDDE, or AdvancedDDE. A free license for up to 32 I/O and/or 2 stations is provided for the SIXNET driver. For more I/O or stations or to run other drivers, additional licenses can be purchased directly from www.kepware.com.

• Modbus Direct Drivers: You can also use Intellution's standard Modbus (RTU, ASCII, or Ethernet) drivers. See Technical Notes #609 (PDF). (Note: With serial connections, you can't communicate to the SIXNET stations with SIXNET software utilities at the same time they are being polled via Modbus ASCII or Modbus RTU.)