The PAUSE command is useful within a program intended to be run in T1 Teach (manual) mode, not in Automatic mode.
Whenever a technician executes a program intended for T1 mode, he or she will often do so in single STEP mode. The PAUSE command is useful to stop the program at important parts, even if the technician forgets to switch to STEP mode, and so is operating manually and also continuously.
Here is an example: The technician is required to execute a program to check the tool's vacuum cup distances once per day, and in Teach (manual) mode. The robot tool has several vacuum cups. He or she must take a reading each time the vacuum cup bears upon the distance-measuring device.
By using the PAUSE command, the technician may execute this program in continuous mode instead of STEP, being assure that the robot will stop moving when it is time to take the reading. When the reading is done, simply re-initiate execution of the program with SHIFT+ForWarD.
The PAUSE instruction precludes Production in AUTO mode. The PAUSE instruction works in T2 mode, but no person should ever be near the robot's working envelope in T2 mode for safety reasons.