User's Manual

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communication. (none, even check or odd check)
Stop bit: The setting determination is used for numbers of stop bit of ModbusRTU communication
information end. (1 or 2)
TCP Port: It is the TCP/IP port number for Modbus TCP (Ethernet), used by the gateway. The default
value is 502.
Data format: Modbus communication data format. Support little-endian format, big-endian format.
Little-endian format: Lower address stores lower bytes of character data, and higher address
stores higher bytes of character data.
Big-endian format: Higher bytes of character data are stored in lower address, and lower bytes
of character are stored in higher address.
Click Submit and there will be Restart the Gateway now? , click OK . The gateway shall restart,
and the setting is effective.
4.3.2 Register Map
Register map is to distribute device data points in the wireless field to Modbus register, and
Modbus primary device or client side shall read these registers. In the gateway setting, choose
Setup > Modbus Register Map to enter.
Figure 4-4
Modbus Register Map
1. The way of adding new data points to Modbus register map:
1) Click Add .
2) Fill in all the items for the new data points.
3) Do step 1,2 again, for each new added data point.
4) Click Submit .
5) When the modification is accepted, the reminder will be Successful! .
2. The way of deleting Modbus register map data points:
1) Mark the items to delete.
2) Click Delete , wait until all the items to delete disappears.