ABB AWIN GW120, User Manual

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CO NFIGURATIO N MODBU S CO NFIGURATIO N
4JNO0 0030 8 A 43
6.11 Modbus Configuration
Click Configuration > MODBUS > MODBUS Configuration in the left navigation column to
show the Modbus Configuration parameters.
Figure 19: Protocol Configuration screen
The gateway offers two options for Modbus configuration.
– Auto (default option): If this option is selected, then the available gateway and devices’
parameters are automatically mapped to the holding registers.
– Manual: If this option is selected, then the user must also provide the custom Modbus
map they wish to use. The map must be uploaded using the Browse option followed by
Submit button. For details on the Modbus file structure refer to the section Modbus Im-
port File Structure .
In the Modbus TCP Port field, enter the Ethernet port number. The default is 502. Click
Submit to save changes. The device must be rebooted for the changes to take effect.
User can also export the Modbus map as-is currently configured in the gateway using the Ex-
port Mappings button on this page.
Modbus does not natively guarantee secure communication. Any node able to com-
municate with the AWIN GW120 via Modbus can perform unwanted changes or
misconfigurations that may disrupt the intended operation of the AWIN GW120
and the connected systems to it.
It is recommended to limit the Modbus communication within trusted networks
and to strictly control accesses to such networks.