Small mobile control unit on CNC-machining centres, via which the most important functions of the machine can be controlled.
The handheld terminal enables the operator to position themselves at any arbitrary point inside the range of the terminal and operate the most important functions of the machine from there. This can hugely ease work, in particular during machine set-up processes or when manufacturing sample workpieces.
During the 1990s, handheld terminals often merely consisted of a speed controller (override) and an emergency stop.
Modern devices can be equipped with a wide range of functions, right through to their own displays and basic programming options. However, the majority of devices used today are only equipped with limited functional scope because ease of operation is of primary importance and the risk of erroneous operation increases with the number of functions.