Communication error OMRON and V710iTD

I have Omron Sysmac CJ1M CPU22 PLC, which is working on a machine with V710iTD HMI. Now the problem is come that when i ON the machine, the HMI Displays " communication ERROR" and written below TIME-OUT, SCREEN NO:0 RECEIVED COD NO:

if you have any idea about this please help me.

Communication Error HMI V710iTD with Omron.

I have Omron Sysmac CJ1M CPU22 PLC, which is working on a machine with V710iTD HMI. Now the problem is come that when i ON the machine, the HMI Displays " communication ERROR" and written below TIME-OUT, SCREEN NO:0 RECEIVED COD NO:

if you have any idea about this please help me.