Siemens SIMATIC IM 151/CPU

Commissioning and Diagnostics
4-12
ET 200S Interface Module IM 151/CPU
A5E00058783-01
Event Identification
The following table indicates how the DP master or the IM 151/CPU of the
ET 200S identifies changes in operating mode and interruptions in user data
transfer.
Table 4-5 Responses to Operating Mode Changes and Interruptions in User Data Transfer in the DP
Master and the ET 200S with the IM 151/CPU
Event
What Happens ...
Event
In the DP Master In the IM 151/CPU
Bus interruption
(short-circuit,
connector
removed)
 OB 86 is called with the message
Station failure
(incoming event;
diagnostic address of the IM
151/CPU)
 During I/O access to the transfer
area: OB 122
is called (I/O access error)
 OB 86 is called with the message
Station failure
(incoming event; diagnostic address
of the IM 151/CPU)
 During I/O access to the transfer
area: OB 122
is called (I/O access error)
ET 200S:
RUN → STOP
 OB 82 is called with the message
Faulty module
(incoming event;
diagnostic address of the
IM 151/CPU;
variable OB82_MDL_STOP=1)
–
ET 200S:
STOP → RUN
 OB 82 is called with the message
Module ok
(outgoing event;
diagnostic address of the
IM 151/CPU;
variable OB82_MDL_STOP=0)
–
DP master:
RUN → STOP
–  OB 82 is called with the message
Faulty module
(incoming event;
diagnostic address of the
IM 151/CPU;
variable OB82_MDL_STOP=1)
DP master:
STOP → RUN
–  OB 82 is called with the message
Module ok
(outgoing event;
diagnostic address of the
IM 151/CPU;
variable OB82_MDL_STOP=0)