Siemens ET 7Y Series Especificaciones Pagina 81

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 214
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 80
DP Master Module
6-5
ET 200S IM 151-7 CPU Interface Module
A5E00058783-04
Start-up of the IM 151-7 CPU as a DP master
When it starts up, the IM 151-7 CPU compares the preset configuration of the DP
master system with the actual configuration.
If the preset configuration the actual configuration, the CPU goes into RUN
mode.
If the preset configuration the actual configuration, the behavior of the CPU
depends on the setting of the Start-up when the preset configuration 0 actual
configuration parameter.
Start-up when preset configuration 0
actual configuration + yes
(default setting)
Start-up when preset configuration 0
actual configuration + no
IM 151-7 CPU goes into RUN mode.
(BF-LED on the DP master module flashes
if all DP slaves cannot be addressed.)
IM 151-7 CPU remains in STOP mode and
the BF-LED on the DP master module
flashes after the set Monitoring time for
transfer of parameters to modules has
elapsed.
A flashing BF-LED indicates that at least
one DP slave cannot be addressed. Check
whether all DP slaves are switched on and
that they correspond to the defined
configuration, or read out the diagnostic
buffer using STEP 7.
Recognizing the operating modes of the DP slave (event recognition)
The table below shows how the IM 151-7 CPU identifies changes in operating
mode and interruptions in data transfer as a DP master.
Table 6-1 Event recognition of the IM 151-7 CPU as a DP master
Event
What takes place in the DP master?
Bus interruption
(short-circuit,
connector
removed)
OB 86 is called and Station failure is reported
(incoming event; diagnosis address of the DP slave assigned to
the DP master)
In the case of I/O access: OB 122 is called
(I/O access error)
DP slave:
RUN STOP
OB 82 is called and Module malfunction reported
(incoming event; diagnosis address of the DP slave assigned to
the DP master; variable OB82_MDL_STOP=1)
DP slave:
STOP RUN
OB 82 is called and Module ok reported.
(outgoing event; diagnosis address of the DP slave assigned to
the DP master; variable OB82_MDL_STOP=0)
Tip:
Always program OB 82 and OB 86 when commissioning the CPU as a DP master.
This will allow you to detect and evaluate the faults and interruptions during data
transfer.
Vista de pagina 80
1 2 ... 76 77 78 79 80 81 82 83 84 85 86 ... 213 214

Comentarios a estos manuales

Sin comentarios