Modbus Error Elimination - wtw DIQ/S 182-MOD System Operating Manual

Modbus connection
Data transmission
between the Modbus
master and
DIQ/S 182-MOD is faulty
The PLC does not
receive any plausible
input data
7 - 14
7.6

Modbus error elimination

Note
Here you will find causes and actions to take of errors concerning the
Modbus communication only. General errors of the IQ S
system are dealt with in chapter 9 W
Cause
– Incorrect wiring of the
Modbus cable on the
connector
– Incorrect setting of address,
baud rate, parity
– Incorrect protocol
– DIQ/S 182-MOD defective
Cause
– The data interpretation is not
correct
....
HAT TO DO IF
Remedy
– Check/change the connections
(see section 7.2)
– Use checklist according to
section 7.1
– Check/change the settings
(see section 7.3)
– Adapt the protocol
– Send DIQ/S 182-MOD to WTW
Remedy
– Observe data formats of the
DIQ/S 182-MOD (see also
section 7.4.4).
ba75504e07
System 182
N
ENSOR ET
04/2012