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Page 19 of 65,
3.5.6 Slave ID Map
The system uses the Modbus ID to route Modbus
’ request commands (from the master node) to the
respective slave node; it is paramount to define ID maps for each slave node. For every slave node,
there must be a correct Virtual ID (Alias ID) and Real ID defined in the maps.
Offset mode can be used when device IDs to be mapped for Modbus master and slaves are
sequential whereas Alias mode can be used when Modbus master and slave IDs are not in
sequence
.
Fig. 3. 12