PROFIBUS DP
5.3 Diagnostics of the CPU 410-5H as PROFIBUS DP master
CPU 410-5H Process Automation/CPU 410 SMART
86 System Manual, 10/2013, A5E32631667-AA
Diagnostics of the CPU 410-5H as PROFIBUS DP master
Diagnostics using LED displays
The following table explains the meaning of the BUS1F LED.
Table 5- 2 Meaning of the "BUSF" LED of the CPU 410-5H as DP master
Off Configuration correct;
all configured slaves are addressable
-
Lit
• Bus fault (physical fault) • Check whether the bus cable has a short-
circuit or a break.
• DP interface fault
• Different baud rates in multi-DP
master operation (only in stand-
alone operation)
• Analyze the diagnostic data. Reconfigure or
correct the configuration.
Flashes
• Station failure
• At least one of the assigned slaves
cannot be addressed
• Check whether the bus cable is connected to
the CPU 410-5H or the bus is interrupted.
• Wait until the CPU 410-5H has started up. If
the LED does not stop flashing, check the DP
slaves or analyze the diagnostics data of the
DP slaves.
Diagnostic addresses for DP master and I-slave
You assign diagnostic addresses for PROFIBUS DP for the CPU 410-5H. Pay attention
during configuring that DP diagnostic addresses are assigned once to the DP master and
once to the I-slave.
Specify 2 diagnostic addresses when configuring
During configuration of the DP master,
specify (in the associated project of the DP
master) a diagnostic address for the DP
slave.
This diagnostic address is used by DP
master to obtain information about the status
of DP slave or a bus interruption.
During configuration of the I-slave, also
specify (in the associated project of the I-slave)
a diagnostic address that is
assigned to the I-slave
.
This diagnostic address is used by the I-slave
to obtain information on the status of the DP
master
or on a bus interruption.
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