YSI IQ S ENSOR N ET Field bus linking - Manual (Page 19)

IQ S ENSOR N ET Field bus linking Configuring the IQ S ENSOR N ET
17 ba76148e01 06/2013
3.5 Error elimination
3.5.1 PROFIBUS error elimination
Data transmission
between the bus master
and IQ S ENSOR N ET is
faulty
The PLC does not
contain any plausible
input data
Here you will find causes and actions to take of errors con-
cerning the PROFIBUS and Modbus communication only.
General errors of the IQ S
ENSOR N ET system are dealt with
in chapter 10 W HAT TO DO IF ....
Cause Remedy
– Incorrect wiring – Check/change the connections
(see section )
– Use checklist according to sec-
tion 3.3
– Incorrect setting of the
address
– Check/change the setting of
the address (see section 3.2.1)
– Incorrect protocol – Check the version of the GSD
file
– Adapt the protocol
– IQ S ENSOR N ET defective – Send IQ S ENSOR N ET to YSI
Cause Remedy
– Input data and output data
are not consistent
– When programming the PLC,
define input data and output
data as consistent over the
entire data length
– The data interpretation of the
PLC is not correct
– Observe the data alignment of
the PLC data representation. If
necessary, exchange the
high-order and low-order bytes
word by word