Chengdu Ebyte Electronic Technology Co,;Ltd
E90-DTU (400SL30-GPRS) user manual
Copyright ©2012–2019，Chengdu Ebyte Electronic Technology Co,;Ltd
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2.2 Working mode and functions
1
、
Working modes are divided into communication mode and configuration mode, which are subdivided into GPRS/2G
network pass-through configuration mode and RF configuration mode.
( a ) Communication mode: the radio works in the communication mode by default after power on, and
automatically starts the network connection. When the connection is established with the server, any data received by
the radio will be transmitted to the server. At the same time, it can also receive data from the server. After receiving
the data from the server, the module will output directly through the rf module. This module supports a maximum
length of 512 bytes per packet.
( b ) GPRS/2G network pass-through configuration mode: in this mode, the user can configure radio GPRS/2G
network pass-through parameters.
( c ) RF configuration mode: this mode allows users to configure radio RF parameters.
( d ) Mode switch: use the official E90-DTU (400SL30-GPRS) to configure the upper computer for mode switch and
parameter configuration. Note that after using the upper computer to enter the configuration state, the system is in
the configuration mode. At this time, click the "module restart" button or "enter the communication button", and the
system will switch to the communication mode. After entering the configuration state, unplug the USB cable and the
system will automatically switch to the communication mode. At this time, if the parameters are not saved in
advance or the GPRS/2G network transmission parameters are modified but the "module restart" button is not
clicked, the modified parameters will not take effect.
2
、
Base station positioning function;
E90-DTU (400SL30-GPRS) supports the base station positioning function. Users can use the officially provided
E90-DTU (400SL30-GPRS) configuration software and click the "query LBS information" button in the GPRS/2G
network transmission configuration mode to read the LBS information of the device in the current period.
Users can use the officially provided E90-DTU (400SL30-GPRS) configuration software. In the
Summary of Contents for E90-DTU 400SL30-GPRS
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