6-9
Communications Processor CP 541
EWA 4NEB 812 6188-02
6.2.3
SINEC L2 Bus Errors
The diagnostics block contains the error code in DR12 for SINEC L2 bus
errors. The meanings of the error codes and the remedies can be found in
Table 6-5.
Table 6-5
SINEC L2 Bus Errors
Error Code
Meaning
Remedy
21
H
Interference to send message by hard-
ware fault in module or bus interfer-
ence
Check the EMC measures described in
Section 3.2.
Replace the module.
24
H
Station is not yet in the ring, parame-
ter HSA is too low.
Check SINEC L2. HSA must be the same
for all stations.
27
H
... 30
H
Protocol error or protocol monitoring
error
Verify the basic parameters in DB1 and
enter the right values. The basic parame-
ters must be the same for all stations.
41
H
Station is not in the ring; another sta-
tion with the same station number is
present.
Change the station number in DB1.
B2
H
Only for active stations: station was
not accepted in the ring within the
monitoring time.
Verify the hardware configuration of
SINEC L2 and correct the values in DB1.
42
H
... B1
H
,
C0
H
... FF
H
An internal fatal error has occurred.
Replace the module.
Consult your Siemens office with the error
code.
If the BF L2 LED lights up during operation, the CP 541 requires a POWER
OFF/POWER ON transition to restart.
Note
If you have changed the parameters in DB1 of the CP 541, you must store
them in the EEPROM. Do this by switching the CP 541 to RUN.
Then switch the CP 541 to 0 and back to RUN again.
Error Code
Clearing Errors
Diagnostics and Error Handling
