1. Use I8120W_Utility.exe to download CANopen.exe of the folder I8120W/BC31 or I8120W/TCPP101. You can find the utility in the folder can/slotmodule/i_8120w/Tools/WinCE5 or can/slotmodule/i_8120w/Tools/WinCE5 in Field-bus CD. 2. Connect PC COM port with the debug port of the I-8120W. The degub port is the JP2 in the PCB of I-8120W. 3. Run 7188xw.exe on PC. You can find it in the folder can/slotmodule/i_8120w/Tools/PC in Field-bus CD. 4. Run RW_DPRAM.exe in the folder WinCE5 or WinCW6. 5. Select Slot No. and click the "Initialize" button in the RW_DPRAM.exe. 6. Key any command in the field of "Send Command To I-8120W" in 5 seconds, and click the button "Send". Or the I-8120W will print the information to tell you the host is dead.