How do you engage step mode on a FANUC robot?

Engaging step mode on a FANUC robot allows for precise control of the robot's movements by allowing it to execute one motion segment at a time. This mode is essential during programming and troubleshooting because it enhances operator control and safety.

The correct method involves pressing the STEP key while holding the shift key and pressing either the FWD (forward) or BWD (backward) keys. This combination ensures that the robot operates in a step mode, allowing incremental movement rather than continuous operation. The shift key is a crucial element in this process, as it modifies the function of the STEP key, enabling the step operation.

The other methods listed do not effectively engage step mode. Simply pressing the STEP key without additional conditions will not activate the desired mode; it requires the simultaneous pressing of keys. Accessing the system menu settings is related to configuring the robot but does not pertain directly to engaging step mode during operation. Hence, the combination of keys involving the STEP and shift keys is the definitive method for engaging step mode effectively.