Error diagnosis and remedies
ASCII | 3964R | RK512
24
Error diagnosis and remedies
If errors are detected, the pattern of flashing of the PB and RUN LED’s on the SPI 3 can
be used for error diagnosis. The LED’s can flash with the following patterns (this is called
the “LED code”):
Note!
If the PB LED (“PROFIBUS”) is off, the RUN LED is on continuously and no
longer indicates a valid LED code. Accordingly, the RUN LED can only be used
for diagnosis when the PB LED is lit. The PROFIBUS diagnostics and error sta-
tuses are reset when the error is no longer present or when the slave gets new
parameter and configuration values
LED off
LED short
LED medium
LED long
LED on
LED always off
LED is ¾ off ¼ on
LED is ½ off ½ on
LED is ¼ off ¾ on
LED always on
PB LED code
Status
Significance
Remedy
PB LED off
Correct data transfer rate
could not be determined
– No PROFIBUS master in
the network
– Connect up the DP master
– Check the wiring
PB LED short
No DP master available
– A master is available but it
is not a DP master
– A master is available but
communication is not tak-
ing place with PROFIBUS-
DP
– Check DP configuration of
the master
– Check address setting on
the SPI 3
PB LED medium Incorrect parameter
– Parameter telegram faulty – Check the DP parameter
telegram, use the correct
GSD file
PB LED long
Incorrect configuration
– Configuration telegram
faulty
– Check the number of mod-
ules (only one module is
allowed in the configura-
tion)
PB LED on
Data exchange OK
– Data exchange is currently
taking place
– SPI 3 working correctly
