hi panic mode!!, thanks for replying , but we are trying with A3A cpu, and we are not getting the Ethernet tab on Network Parameter, and also while trying to change the Transfer setup we dont get any setting by clicking on the PC side I/F ---> Ethernet Board , please see the attachment...actually we are having the following PLC configuration... A1ACPU,and the ethernet card on the PLC is AJ71E71(and we are using Cheapernet), and we are having GX-Developer 8.01b on win XP having ethernet card installed on the PC. we are using transceiver for ethernet to cheapernet conversion, and we been able to ping the PLC from our PC , but the main thing is that we are not ale to ping the PLC fron the GX, ...that means we are not able to communicate with the PLC. .... untitled.