Product description
Application Module FM 458-1 DP - User Manual 2-37
A5E01078222-02 Edition 03.2009
2.3.5 Status displays
There are two LED displays provided under the upper housing cover of
the EXM 448 communications expansion module. These provide
information about the actual operating status.
LED Status Diagnostics information
green dark PROFIBUS not initialized
flashing
5 Hz
fatal error:
The error code can be read at function block @CSPRO
and then contact the SIMADYN D Hotline
flashing
1 Hz
The connection to the associated CPU module is being
initialized (@CSPRO): Check the configuring
bright Initialization O.K.
yellow dark No bus operation (initialization phase)
flashing
5 Hz
Bus error/fault, e.g. short-circuit:
Check the bus cable and other nodes
flashing
1 Hz
COM database not available or inactive when
downloading (only for PROFIBUS)
flashing
0.5 Hz
CFC- and COM configuring do not match:
Restricted bus operation possible (only for PROFIBUS)
bright Bus operation O.K.
Table 2-21 Status displays of the communications expansion module
EXM 448
NOTE
The green and yellow LEDs are only visible from the top through the
cooling slots of the housing.
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