Installation/Mounting - Siemens SINUMERIK 840D sl Manual

Name
Sync
9.5.2

Installation/Mounting

NOTICE
Damage to the option board by inserting and withdrawing in operation
● Option boards should only be inserted and removed when the NCU and option board are
● Option boards may only be operated by qualified personnel. The ESD notices must be
NCU 7x0.3 PN, NCU 7x0.3B PN
Manual, 06/2014, 6FC5397-1EP40-5BA1
Color Status
flashing (2 Hz)
Green off
lit
flashing (0.5 Hz)
in a no-current condition.
observed.
Meaning
● Failure of a connected NCU
● At least one of the assigned NCUs cannot be
addressed
● Incorrect or no configuration.
Clock cycle system of the NCU is not synchronized to
the send cycle. An internal substitute clock of the same
size as the send clock is generated.
Clock cycle system of the NCU has synchronized to the
send cycle and data exchange is running.
Clock cycle system of the NCU has synchronized to the
send cycle and cyclic data exchange is running.
Connectable components
9.5 CBE30-2
151