Siemens SINUMERIK ONE NCU 1760, Equipment Manual, Page: 124 / 162

Name Designation Color Description
H2 PNSync Green Lit: Task system is synchronized to the bus cycle clock.
Not lit: Task system is not synchronized to the bus cycle clock.
Flashes 0.5 Hz: Task system has synchronized to the bus cycle clock and cyclic data
exchange is running.
H3 PNFault Red Not lit: Module is operating without error.
Lit: A system error has occurred (faulty module, incorrect parameterization by the PRO‐
FINET controller, etc.).
H4 DIAG1 Green Reserved
H5 DIAG2 Green Reserved
H6 OVTemp Red Overtemperature display
Note
When the system is booting, LEDs H1, H2 and H3 are lit.
Connectable components
11.3 PP 72/48D PN 2/2A PN
NCU 1760
124
Equipment Manual, 02/2020, A5E45627861B AB