LED displays
Table 12-1 Description of LEDs on the NX10.3 / 15.3
LED Color Status Description
RDY O Electronic power supply outside permissible tolerance range
Green
Continuous light NX is ready for operation
Flashing light 2 Hz Writing to SD card of the connected NCU
Red
Continuous light NX is presently ramping up and at least one fault is present (e.g. RESET,
watchdog monitoring, basic system fault).
Flashing light 0.5 Hz Boot error (e.g. rmware cannot be loaded into the RAM)
Orange Continuous light Firmware loading into RAM
Flashing light 0.5 Hz Unable to load rmware into RAM
Flashing light 2 Hz Firmware CRC fault
DP O Electronics power supply outside the permissible tolerance range, NX is
not ready to run.
Green Continuous light CU_LINK is ready for communication and cyclic communication is running.
Flashing light 0.5 Hz CU_LINK is ready for communication and no cyclic communication is run‐
ning.
Red Continuous light At least one CU_LINK fault is present.
CU_LINK not ready for operation (e.g. after switching on)
RESET button
The RESET button is on the front of the module under the cover.
Note
The RESET button of the NX1x.3 only aects the devices connected to the NX. To get the NX
ready for operation again after a reset with the NCU, a Reset (po) via the Sinumerik Operate is
required.
Connectable components
12.1NX10.3/NX15.3
NCU 1750
102 Equipment Manual, 10/2023, A5E45627807B AH
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