... 0x0301From Server to tracker unit@@ + L + ID + 0x0301+ Data +checksum(2byte) + Data:MenuItem1 + + MenuItem2 + + MenuItem3The max menu ... message from Server@@ + L + ID + 0x0301+ Flag +checksum(2byte) + 2.Add menu (GPRS)Command 0x0302Following GPRS package from ... server@@ + L + ID + 0x0302+ Data +checksum(2byte) + Data:MenuItem1 + + MenuItem2 + + MenuItem3When there is ...
... (12 times as RS485), distant(8 times as RS485), CRC checksum, and strong in hardware arbitration, error correction and real time ... . (RS485 has no function of arbitration, error correction, and checksum.)9.Idiot proof Software with Multi-functionThe software provides the ...
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