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4. Troubleshooting (PROFIBUS DP)
♦ Causes of Error
Possible Cause Examination Method Countermeasure
{ Electrical surges
of master device
power supply
Measure voltage of device power
supply at the master unit.
→ It should be within the range
of sufficient voltage for device
operation.
Check voltage of the
device power supply.
{ Master device
configuration error
Check that the master device was
configured properly.
→ After changing the
configuration, verify whether
the problem is fixed.
Check the master unit
configuration.
{ Broken master
unit
Replace the broken master unit
with a new one.
→ Verify whether the problem is
fixed.
Replace the master unit
with a new one.
Fieldbus I/O Rev.6 127