6600		5

	Host-servo communicate IC error (servo)
	Controller internal error (A communication IC failure was detected in the servo initialization. A communication error occurred in servo communication.)
	1. Check that the FG (frame ground) terminals of the robot and the controller are grounded. 2. Check that the robot and the controller are away from noise source such as a welding machine. 3. Check that the cable between the robot and the controller is firmly plugged.