User's Manual

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Figure 5-20 Modbus-Net-Bridge example 5
5.6 IHDMP Usage Example
DTU can be managed not only through the dedicated configuration tool DTU Tool,
but also based on proprietary protocols, IHDMP. For example, send SMS, get the
configuration of the DTU, and so on. For more details of IHDMP protocol, please
refer to the "DTU Device Management Protocol user manual"
Serial Port Utility simulates the serial device to interact with the DTU, control the
DTU based on the private IHDMP protocol, and send the SMS “1234” to one mobile
phone number “13912345678”.
Open the serial port utility Serial Port Utility and select the Hex mode to
send/receive data.
Serial Port Utility (send): 55 AA 55 AA 13 00 1C 81 80 00 0B 31 33 39 31 32 33 34 35
36 37 38 81 81 00 01 02 81 82 00 04 31 32 33 34 FC DE
After the DTU receives the above message, if the packet is invalid, the DTU will not
return anything.