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1
Enable
6
Transmission method
0
Transparent transmission (default)
1
Fixed-point transmission
5
Relay function
0
Disable relay function (default)
1
Trunking Enable
4
LBT Enable
0
Disable (default)
1
Enable
3
Reserved
2
1
0
Reserved
Key High Byte（default0）
E90-DTU(xxxSL42) User Manual
will follow an RSSI
intensity byte when
output
through the
serial port TXD.
The
module
will
recognize
the
first
three bytes of the
serial data as: address
high + address low +
channel, and will use
them as the wireless
transmit target.
When the
relay function is
enabled, the
module will
initiate a
forwarding if the
destination
address is not the
module itself.
In order to
prevent data
backhauling, it is
recommended to
use with fixed
point mode. That
is, the
destination
address is
different from
the source
address.
When it
is
enabled,
wireless data
will be listened
to before
transmitting,
which can avoid
interference to a
certain extent,
but may bring
data delays
The maximum
dwell time of
LBT is 2
seconds, and it
will be forced to
send out when it
reaches two
seconds.
write-only,
read returns 0
used for user
18
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