Siemens SINUMERIK 840D sl Manual page 86

Connectable components
9.1 NX10.3 / NX15.3
LED Color
Green
Red
RESET button
The RESET button is on the front of the module under the cover.
Note
When the pushbutton is actuated, the locally connected drive systems are brought to a
standstill with no feedback to the control. In other words, the drive and controller run
asynchronously once the drive has successfully booted up.
86
Status
Continuous light
Flashing light 0.5 Hz
Continuous light
Description
CU_LINK is ready for communication and cyclic communication is
running.
CU_LINK is ready for communication and no cyclic communication is
running.
At least one CU_LINK fault is present.
CU_LINK not ready for operation (e.g. after switching on)
NCU 7x0.3 PN, NCU 7x0.3B PN
Manual, 06/2014, 6FC5397-1EP40-5BA1