Ebyte E95-DTU User Manual page 16

Chengdu Ebyte Electronic Technology Co.,Ltd
05H Read/Write REG2
06H Read/Write REG3
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Channel Control (CH)
1
Actual frequency = 433MHz
7 Enable RSSI byte
0 Disabled (default)
1 Enable
6 Transfer method
0 Transparent transmission (default)
1 Fixed point transmission
5 Relay function
0 Disable relay function (default)
1 Enable relay function
4 LBT Enable
0 Disabled (default)
1 Enable
3 WOR Mode send and receive control
WOR receiver (default)
The transceiver is turned on, and when
0
transmitting data, a wake-up code for a certain
period of time is added.
WOR transmitter
The DTU cannot transmit data, and it works in
1 WOR monitoring mode. The monitoring period is
shown below (WOR period), which can save a lot
of power consumption.
2 1 0 WOR Cycle
0 0 0 500ms
0 0 1 1000ms
0 1 0 1500ms
0 1 1 2000ms
1 0 0 2500ms
1 0 1 3000ms
1 1 0 3500ms
E95-DTU(400SL22-485) User Manual
The relationship between power and current
is non-linear, and the power supply has the
highest efficiency at maximum power;
The current will not decrease in the same
proportion as the power decreases.
After being enabled, the DTU receives
wireless data and outputs it through the serial
port TXD, followed by an RSSI strength byte.
During fixed-point transmission, the DTU
will recognize the three bytes of serial data
as: address high + address low + channel, and
use it as a wireless transmission target.
After the relay function is enabled, if the
target address is not the DTU itself, the DTU
will start a forwarding;
In order to prevent data from returning, it is
recommended to use it in conjunction with
the fixed-point mode; that is, the destination
address is different from the source address.
After enabling, monitoring will be conducted
before wireless data transmission, which can
avoid interference to a certain extent, but may
cause data delay;
The maximum stay time of LBT is 2 seconds,
and it will be issued forcibly when it reaches
2 seconds.
Only valid for mode 1;
After the WOR receiver receives the wireless
data and outputs it through the serial port, it
will wait 1000ms before entering the WOR
again. The user can input the serial port data
during this period and return it via wireless;
Each serial port byte will be refreshed for
1000ms;
The user must initiate the first byte within
1000ms.
Only valid for mode 1;
Cycle T= (1+WOR)*500ms, the maximum is
4000ms, the minimum is 500ms;
The longer the WOR monitoring interval
period, the lower the average power
consumption, but the greater the data delay;
Both sender and receiver must agree (very
important)
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