Ethernet Communication Module IFD9506 „ Switch to “User Define” page to set up the “Fix Length”, “Start Item” and “Stop Item". 1. Listen Port/Destination Port: Range: 1024 ~ 65535. 2. Fix Length: When this is set, IFD9506 will transmit data following the fixed length. 3. Start Item: The start item of data. Range: 1 ~ 3 DVP-PLC Application Manual 25