Siemens SENTRON VL Series System Manual page 39

Diagnosing the communication system
The COM15 has two LEDs called PROFIBUS and CubicleBUS for diagnosing
communication. The operating status for PROFIBUS DP and the CubicleBUS can be read
from these.
The figure below shows the front view of the PROFIBUS module of the SENTRON WL with
the PROFIBUS connection and the two LEDs. The lower figure shows part of the ETU45B
and its LEDs for status indication.
①
②
③
④
Figure 3-7
PROFIBUS LED
The PROFIBUS LED shows the status of the PROFIBUS communication of the COM15
module.
Table 3- 4
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
ETU45B
Rating Plug
I N =.
I = 1600 A
n
Connecting terminals
PROFIBUS LED
CubicleBUS LED
Communication LED on the trip unit
COM15 PROFIBUS module of the SENTRON WL and ETU45B
PROFIBUS LED
PROFIBUS LED
Off
Red
Green
PROFIBUS
I N
1xI n
I t I t
No voltage on the COM15
No communication with master class 1, even if only
master class 2 is connected.
PROFIBUS communication functioning
Cyclic data traffic with class 1 master
3WL air circuit breakers
3.2 COM15 module and BSS module
Meaning
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