USR-GPRS232-DTU USR MANUAL
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Jinan USR IOT Technology Limited
5 operating modes Introduction
5.1 Data passthrough mode
The basic function of the data transparent mode is the serial data received will be forwarded to the public network
server module is connected to the public network to forward data sent by the server to the serial port to exchange data
between the user and the public network serial device server.
Parameters data transparent transmission mode is in effect are:
1 APN account
APN account used to notify the network operator when the appropriate network information to establish a network
connection. The network currently in use requires the user to be set according to information provided by the operator.
2 the serial port parameters
Serial port parameters for baud rate, data bits, parity and other information set serial module working.
3 the operating mode
Set module in transparent mode data.
4 the network connection information
Connection information setting module connected to the public network server, including whether to enable the
connection of the domain name / IP address, network connection type (TCP / UDP) and destination port four
parameters, our products support up to four network connections simultaneously online (can not be used as a backup
server), so there are four connection setup software information to fill in the area.
5 heartbeat time
Time is the heartbeat heartbeat packet data transmission interval. In the case of DTU heartbeat packet is not
received serial data, and the network does not receive data to send heartbeat heartbeat packet time interval data. For
maintaining network connectivity.
This parameter is the recommended 30 to 60, to 0 to disable heartbeat.
6 serial packing time
Serial packing time refers to the serial port of DTU within this time no new data is received, it will have received
data package sent to the network.
This parameter is the recommended 10 to 100.
7 automatic restart time
Automatic restart time is the time, DTU is not received within a set time to network data, it does not receive the
serial data, then automatically restart. This parameter is the recommended 600 to 1800, Less than 600 to disable this
feature.
8 heartbeat packet format
Heartbeat packet format for 40-byte random characters, the user can set, for the maintenance of the network
connection.
If do not need this feature can be set to empty the contents of the package heartbeat.
9 registration packet format
Sign up for 40-byte packet format any character, DTU module establishes the first packet network connection
