Siemens ET 7Y Series Especificaciones Pagina 93

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Commissioning and Diagnostics
7-11
ET 200S IM 151-7 CPU Interface Module
A5E00058783-04
The table 7-5 shows the LED states for DP master operation.
Table 7-5 LED display for PROFIBUS-DP (IM 151-7 CPU is a master)
“BF” LED
on
DP master
module
“SF” LED
on IM 151-7
CPU
Description Cause Error handling
On On No connection to
the DP slave
Bus connection
interrupted
Slave does not exist or
is switched off
Bus short-circuit
Check that the
connector for the
PROFIBUS-DP is
inserted correctly
Check whether the bus
cable to the DP master
is defective
Evaluate the diagnosis.
Reconfigure or correct
the configuration.
Flashing On There is no
data
exchange
Parameter
assignment
error
A connected station
has failed
At least one of the
assigned slaves
cannot be addressed
Configured address
areas of the actual
configuration not
identical to the target
configuration
Check whether the bus
cable is connected to
the CPU or the bus is
interrupted.
Wait until the CPU has
run up. If the LED does
not stop flashing, check
the DP slaves or
evaluate the diagnosis
of the DP slaves.
Check the setting for the
configured address
areas for the master
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