Ebyte E30-490T20S, Руководство пользователя

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Chengdu Ebyte Electronic Technology Co,;Ltd E30 -490T20S user manual
Copyright ©2012–2019
，
Chengdu Ebyte Electronic Technology Co,;Ltd
14
2 ADDL
Low address byte of module
（
the default 00H
）
00H-FFH
3 SPED
7 6
UART parity bit
 UART mode can be different between
communication parties
0 0 8N1 (default)
0 1 8O1
1 0 8 E1
1 1 8N1 (equal to 00)
5 4 3
TTL UART baud rate
（
bps
）
 UART baud rate can be different between
communication parties
 The UART baud rate has nothing to do with
wireless transmission parameters & won’t
affect the wireless transmit / receive features.
0 0 0 1200
0 0 1 2400
0 1 0 4800
0 1 1 9600 (default)
1 0 0 19200
1 0 1 38400
1 1 0 57600
1 1 1 115200
2 1 0
Air data rate
（
bps
）
 The lower the air data rate, the longer the
transmitting distance, better anti-interference
performance and longer transmitting time

The air data rate must keep the same for both
communication parties.
0 0 0 1k
0 0 1 2k
0 1 0 5k (default)
0 1 1 8k
1 0 0 10k
1 0 1 15k
1 1 0 20k
1 1 1 25k
4 CHAN
7 6 5 reserved Write 0
Communication channel
00H-FFH, correspond to 475 ~ 500.5M Hz
4 ~ 0, channel (475M + CHAN * 0.1M) , default 96H (490MHz)
5
OPTIO
N
7
Fixed transmission enabling bit
（
similar to MODBUS
）
 In fixed transmission mode, the first three
bytes of each user's data frame can be used as
high/low address and channel. The module
changes its address and channel when
transmit. And it will revert to original setting
after complete the process.
0
Transparent transmission mode
1
Fixed transmission mode
6 IO drive mode (default 1)
 This bit is used to the module internal pull-up
resistor. It also increases the level’s
adaptability in case of open drain. But in
1
TXD and AUX push-pull outputs, RXD pull-up inputs
0
TXD
、
AUX open-collector outputs, RXD open-collector