Programs, parameters, CAL data, etc. are stored in the internal memory of the robot controller.
The memory backup battery retains the above data while the power to the robot controller is turned OFF. However, the battery has a limited lifetime and must, therefore, be replaced regularly. Note: If two years elapse from replacement of backup battery, the "Time to change controller backup battery" message will appear on the teach pendant. Replacing procedures This section gives an example of replacing the memory backup battery. Caution: Before replacing the memory backup battery, be sure to save the memory data in the robot controller to the PC using WINCAPSII. Step 1 Save the memory data held in the controller to the PC. Step 2 Make a new memory backup battery ready for use. Step 3 Turn the controller power ON, wait at least one minute, and then turn it OFF again. 92 Step 4 Remove two screws from the battery cover and pull them out together with the backup battery. Step 5 Disconnect the backup battery harness. Caution Complete Steps 5 through 7 within three minutes. Taking more time will lose the memory data. 93 Step 6 Set the new memory backup battery ready for use in Step 2 on the battery cover. Step 7 Connect the backup battery harness to the controller. Step 8 Mount the battery cover with the new backup battery into the controller and secure the cover with the screw. Caution Take care not to pinch the battery lead wires between covers or internal parts. Shorting may occur, resulting in an unexpected failure.