PROFIBUS DP
5.3 Diagnostics of the CPU 410-5H as PROFIBUS DP master
CPU 410-5H Process Automation
92 System Manual, 09/2014, A5E31622160-AB
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.
Check the DP slaves if the LED does not stop
flashing. If possible, evaluate the diagnostics
of the DP slaves with direct access via the
bus.
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