Hi Sparky, thanks for your help but still having issues. I am sure the EIP4CCPU is setup OK, because I have another device connected and it is working. Seems like I have issue with AB side, it cannot talk to EIP4CCPU. The EIP4CCPU address is 192.168.3.3, that is what I put in the AB module properties. Just to confirm there is not EDS required in EIP4CCPU configuration tool for this setup? Also do I need read/write on Mitsubishi PLC side?
Thanks,