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Diagnostics and troubleshooting
13.2
Interface errors
Error
No communication via
PROFIBUS
COM continuous red
light LED
Sporadic errors at the
PROFIBUS
Figure 13.1: Interface error
Notice!
Please use chapter 13 as a master copy should servicing be required.
Cross the items in the "Measures" column which you have already examined, fill out the
following address field and fax the pages together with your service contract to the fax
number listed below.
Customer data (please complete)
Device type:
Company:
Contact partner / department:
Phone (direct):
Fax:
Street / No:
ZIP code/City:
Country:
Leuze Service fax number:
+49 7021 573 - 199
74
Possible error cause
Incorrect wiring.
Different protocol settings.
Incorrect PROFIBUS address set.
Incorrect configuration.
Incorrect wiring.
Effects due to EMC.
Overall network expansion
exceeded.
MA
204i
Measures
Check wiring.
Check protocol settings.
Check PROFIBUS address.
Check configuration of the device in the
configuration tool.
Check wiring.
In particular, check wire shielding.
Check the cable used.
Check shielding (shield covering in place up to
the clamping point).
Check grounding concept and connection to
functional earth (FE).
Avoid EMC coupling caused by power cables laid
parallel to device lines.
Check max. network expansion as a function of
the max. cable lengths.
Leuze electronic
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