Only appropriately trained personnel may use the operating elements provided in the service
area.
NOTICE
Electrostatic discharge if there is no ground connection
If there is no ground connection or a faulty ground connection, then the electronic components
in the devices can be damaged as a result of electrostatic discharge (ESD).
● Before you open the service flap, discharge yourself at the cabinet or at the ground
terminal.
① LED display
② 7-segment display
③ NCK commissioning switch (rotary switch)
④ Reset button
⑤ Diagnostics button
⑥ PLC mode selector switch (toggle switch)
Figure 3-4 Position of operator control and display elements
Description
3.4 Operator control and display elements
NCU 1760
28 Equipment Manual, 02/2020, A5E45627861B AB