User Documentation

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7.1.1.4 Basic Settings  Slave ID
The menu item Slave ID Map is where the slave IDs of the serial Modbus devices are managed. This
mapping determines how requests from a Master will be routed to slave devices.
Slave ID related parameter settings when adding new TCP slaves
Parameter
Value
Remote IP address
IP address of remote Modbus TCP slave
TCP Port
Default port value 502 (Modbus TCP Standard)
Slave ID Start
Numeric range from 001 to 254
Slave ID End
Numeric range from 001 to 254
Slave ID Offset
This specifies the difference between the virtual slave ID (is the public ID from
the perspective of a Master) 
and the actual ID is 5, you would set the offset to -11.
How Slave ID mapping is working
Modbus RTU/ASCII slaves generally will be addressed by an unique device ID. The device ID of a

To be able to address via the Modbus Gateway a complete Modbus slave network  consisting of
RTU/ASCII Slaves (connected to the serial Interface) and additional Ethernet-based Modbus TCP
slaves - Munique 
In the Slave ID Map  created and assigned  The
