Modbus Configuration; Modbus Map; Figure 19: Protocol Configuration Screen - ABB GW100 User Manual

CO NF IG UR AT IO N
6.11

Modbus Configuration

Click Configuration > MODBUS > MODBUS Configuration in the left navigation column to
show the Modbus Configuration parameters.
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
port File
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 GW100 rev.2 via Modbus can perform unwanted changes
or misconfigurations that may disrupt the intended operation of the AWIN GW100
rev.2 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.
6.12

Modbus Map

Click Configuration > MODBUS > MODBUS Mapping in the left navigation column to show
the current Modbus map.
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Figure 19: Protocol Configuration screen

Structure.
M OD BUS CO NFIG URATI O N
Modbus Im-
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