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6.11 User-Defined Packets
Packet types: ASCII, HEX, and DC.
ASCII type means that the packet uses ASCII characters.
HEX type means that the packet uses HEX characters.
DC type means that packet content will adopt the same format with DC message.
Table 6-8 Setting user-defined packet parameters
Parameters Description Default
Log-in
The data content and format of submitted packet form DTU to
application center when login
Empty
Log-in ack
The data content and format of responded packet form
application center to DTU when login
Empty
Heartbeat
The data content and format of heartbeat packet form DTU to
application center after connected
Empty
Heartbeat ack
The data content and format of heartbeat packet form application
center to DTU after connected
Empty
Log-out
The data content and format of submitted packet form DTU to
application center when log-out
Empty
Log-out ack
The data content and format of responded packet form
application center to DTU when log-out
Empty
The user-defined frame is valid only when the connection type is TCP or UDP. It is
recommended that the login frame and the login ack frame must be used in pair. The
heartbeat frame and the exit frame are same condition.