Siemens SIMATIC S5 Manual page 48

Table 3-3 Meanings of the LEDs on the IM 308-C master interface
RN OF IF
Flashes Off Off IM 308-C as DP master: IM 308-C parameterizes all
slaves on the bus and checks their addressability.
Status is CLEAR:
Afterwards, the IM 308-C reads the inputs but sets all
outputs to "0". The IM 308-C can receive the token
from another master and pass it on.
IM 308-C as DP slave: CPU outputs BASP; bit 7, byte
7 of the slave diagnostics is set.
IM 308-C as DP master and DP slave: IM 308-C
does not receive the token.
Off Flashes Off
IM 308-C as DP master: Status is STOP:
IM 308-C does not exchange data with the slaves.
The IM 308-C can receive the token from another mas-
ter and pass it on.
IM 308-C as DP slave: IM 308-C as DP does not ex-
change data with the DP master.
Depending on parameterization with COM ET 200
Windows, QVZ, PEU or no error is reported at the
slave CPU and the master CPU.
Bit 0, station status 1, is set.
Off On Off IM 308-C as DP master: Status is OFF:
IM 308-C does not exchange data with the slaves and
can neither receive nor pass on the token.
IM 308-C as DP slave: IM 308-C as DP slave does not
exchange data with the DP master.
No exchange of data between the IM 308-C/DP slave
and the slave CPU
Off Off On Fault in the IM 308-C or
wrong memory card inserted
Flashes Flashes Off Operating system is being loaded from memory card.
On On Off Operating system has been loaded from memory card.
On On Flashes An error has occurred in importing the operating sys-
tem from memory card.
ET 200 Distributed I/O System
EWA 4NEB 780 6000-02a
IM 308-C master interface and memory card
Meaning Remedy
–
–
Check the slave diagnostics.
–
–
–
Pull and reinsert the
IM 308-C. If the fault per-
sists, replace the module or
contact Siemens support.
or
Insert a memory card with
the correct order number.
Read the notes in Section
3.4.
–
–
Repeat the import proce-
dure.
Check that the correct
memory card is inserted.
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