Ebyte E31-433T17D, Руководство пользователя, Страница: 14 / 19

Chengdu Ebyte Electronic Technology Co.,Ltd. E31-433T17D User Manual
Copyright ©2012–2019 ， Chengdu Ebyte Electronic Technology Co.,Ltd.
13
1 0 0 Serial port baud rate 19200 wireless transmission and reception
characteristics.
1 0 1 Serial port baud rate 38400
1 1 0 Serial port baud rate 57600
1 1 1 Serial port baud rate 115200
2 1 0
Wireless air data rate
（
bps
）
The lower the air speed, the longer the
distance, the stronger the anti-
interference performance and the longer
the transmission time.
The wireless transmission rates of both
communicating parties must be the same.
0 0 0
Air data rate 1.2k
（
default
）
0 0 1 Air data rate 2.4k
0 1 0 Air data rate 4.8k
0 1 1 Air data rate 9.6k
1 0 0 Air data rate 19.2k
1 0 1 Air data rate 38.4k
1 1 0 Air data rate 50k
1 1 1 Air data rate 70k
4 CHAN
7 6 5 Keep and unused Write 0.
Communication channel
00H-FFH
，
correspond 425 ~ 450.5M Hz
4-0
：
（
425M + CHAN * 0.1M ), default 50H
（
433M
）
5 OPTION
7
Fixed point send enable bit
（
similar to M ODBUS
）
When value is 1, the first 3 bytes of each
user data frame are used as the high and
low addresses and channels. When
transmitting, the module changes its own
address and channel, and when it is
finished, it restores the original settings.
0 Transparent transmission mode
1 Fixed point transmission mode
6
IO drive mode
（
default 1
）
This bit is used to enable the internal
pull-up resistor of the module. Open-
drain mode is more adaptable, and in
some cases an external pull-up resistor
may be required.
1
TXD
、
AUX push-pull output
，
RXD pull up input
0
TXD
、
AUX open-drain outputs
，
RXD open-drain
inputs
5 4 3 Wireless wake-up time Both transmitter and receiver module
work in mode 0. The delay time is invalid
and can be any value.
The transmitter works in mode 1, and
will continue to transmit the call code for
the corresponding time.
The receiver works in mode 2, which
refers to the receiver's listening interval
(wireless wake-up) and can only receive
data from the module working in mode 1.
0 0 0
250ms
（
default
）
0 0 1 500ms
0 1 0 750ms
0 1 1 1000ms
1 0 0 1250ms
1 0 1 1500ms
1 1 0 1750ms
1 1 1 2000ms
2 FEC switch After the FEC is turned off, the actual
data transmission rate is increased, but
the anti-interference ability is weakened
and the distance is slightly closer. Please
choose according to the actual
application. Both sides of
0 Turn off FEC
1
Open FEC
（
default
）