Installation/Mounting - Siemens NCU 7x0.3 PN Series Manual

Connectable components
9.5 CBE30-2
LED displays
The four ports of the X1400 interface provide integrated LEDs for displaying the link and the
activity. The front panel of the CBE30-2 is also fitted with two LEDs (Fault and Sync), which
indicate the bus status.
Table 9- 74
Name
Link port
Activity port
Fault
Sync
9.5.2

Installation/Mounting

CAUTION
Option boards should only be inserted and removed when the Control Unit and option
board are in a no-current condition.
CAUTION
Option boards may only be operated by qualified personnel. The ESD notices must be
observed.
154
LED displays
Color Status
Green lit
Yellow lit
Red not lit
lit
flashing (2 Hz)
Green not lit
lit
flashing (0.5 Hz)
Meaning
The physical connection exists.
Data is being received or transmitted.
CBE runs without errors, data is being exchanged.
Bus fault:
No physical connection to a subnet/switch

Incorrect transmission rate

Full duplex transmission is not activated.

Failure of a connected NCU

At least one of the assigned NCUs cannot be

addressed
Incorrect or no configuration.

Clock cycle system of the Control Unit 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 Control Unit has
synchronized to the send cycle and data exchange is
running.
Clock cycle system of the Control Unit has
synchronized to the send cycle and data is being
cyclically exchanged.
Manual, 09/2011, 6FC5397-1EP40-0BA0
NCU 7x0.3 PN