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Subscriber addresses
All stations in the Ethernet network are unambiguously identified via IP address.
This is the reason why the Modbus slave address can always be set to 1.
5.2.1
Example telegrams
The lines below show the structure of the Modbus/TCP telegrams. The first
column is the telegram of the bus master to the scale and the second column is
the scale's reply.
Data to Scales
00 00 00 00 00 06
01 06 0010 0001
00 00 00 00 00 06
01 03 0300 0001
00 00 00 00 00 06
01 03 0748 0010
00 00 00 00 00 0B
01 10 0110 0002 04 4323 5678
5.2.2
Diagnosis and Troubleshooting
The event message is a group message for all faults concerning the fieldbus
connection. These are:
n
Different station addresses sent to the master and scales.
n
There is a problem with the cabling between the fieldbus connection and main
board.
n
The fieldbus cable is defective or incorrectly connected.
n
The timeout parameter has been set at too small a value. Change the
parameterisation of the scales.
n
An unacceptable ID (data address) was identified in the telegram of the master
to the scale.
Also refer to the section on fault codes (also refer to Modbus-RTU).
DISOMAT Opus, Satus, Tersus, Data Communication
© Schenck Process
Scale's Reply
00 00 00 00 00 06
01 06 0010 0001
00 00 00 00 00 05
01 03 02 xx xx
00 00 00 00 00 23
01 03 20 xx ..... xx
00 00 00 00 00 06
01 10 0110 0002
BV-H2359GB/0902
5.2 Modbus/TCP
Meaning
Taring
Read group status
Read gross weights on channels 1-8
Write setpoint (value = 163.34)
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