User manual

Operating Elements, LEDs and Connectors
33003962 11/2011 29
No. Description
1 Backlit LCD display
2 Communication LED (XBT N401)
3 Alarm LED (XBT N401)
4 LEDs that can be controlled by the PLC (XBT N401)
5 Service keys for functional link
6 Service keys
7 Keys for function or numeric input (according to software configuration)