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Chengdu Ebyte Electronic Technology Co.,Ltd.
E90-DTU(433L30E)-V8 User Manual
pressing the Reload pin of the device until the LED indicators are all on to release the keys.
5. Advanced Functions
5.1. Heartbeat Packet
In client mode, users can choose to send heartbeat packets and set the time of heartbeat packets by themselves. The
heartbeat packet can be selected in two modes: network heartbeat packet and serial heartbeat packet. It supports
hexadecimal and ASCII transmission. This heartbeat packet is not an MQTT heartbeat and needs to be turned off in
MQTT client mode. MQTT heartbeat only needs to configure KeepAlive in "MQTT function settings" Time, it is
recommended not to configure less than 60s.
Heartbeat packet sending mode:
(1) The default is to turn off the heartbeat packet mode.
(2), serial port mode -> the device sends heartbeat content to the serial port bus according to the set heartbeat time
interval.
(3) Network port mode -> The device sends heartbeat content to the network port bus according to the set heartbeat
time interval.
Customize heartbeat packet content (maximum support 40 bytes (ASCII) data, 20 bytes (HEX) data)
Customize the heartbeat packet sending interval. When it is set to 0, the heartbeat packet function is turned off. If
the setting value is greater than zero, the heartbeat packet function is turned on.
5.2. Registration Package
In the client mode, the user can choose to send the registration package, and set the registration package time by
definition.
The registration package supports the following modes:
(1) The MAC address (OLMAC) is sent when the network establishes a connection with the device
(2) The data of the custom registration package sent when the network establishes a connection with the device
(OLCSTM)
(3) After the network and the device are connected, each packet of data sent by the device to the network is
preceded by a MAC address (EMBMAC)
(4) After the network and the device are connected, each packet of data sent by the device to the network is
prepended with custom registration packet data (EMBCSTM)
Custom registration package content (maximum support 40 bytes (ASCII) data, 20 bytes (HEX) data)
[Note] Please do not use special characters (such as ",", "\", "/", etc.) when configuring the registration package on
the web page. The host computer can configure special characters, but it may cause the web page configuration to
be inaccessible.
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