21 (Operation of the Vision Sensor) Execute PING command to the IP address of the robot controller. 3 (Operation of the Vision Sensor) When 32-byte data could be successfully sent/received four times as shown in the figure on the right, that means that the communications have been established and the wiring and settings of Ethernet is correctly done. When 32-byte data cannot be sent/received four times and PING command timed out, check whether or not the robot controller is turned on, the wiring was correctly done, or communication settings are correct. 4