PROFIBUS DP
5.3 Diagnostics of the CPU 410-5H as PROFIBUS DP master
CPU 410-5H Process Automation
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System Manual, 09/2014, A5E31622160-AB
5.3
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
BUS1F
Meaning
Remedy
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.