Rs485 Pin - Ebyte E150-400T30S User Manual

400m frequency band 1w lora wireless acquisition control module

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Chengdu Ebyte Electronic Technology Co.,Ltd.

For example, 1: output a square wave with low starting level, 20% duty cycle and 1000 Hz frequency

① Set the duty ratio to 20%

Device MODBUS

address

②

Set the frequency to 1000 Hz

Device MODBUS

address

③

Set initial level

Device MODBUS

address

Note:

The CRC check code of the last two bytes of the sending instruction needs to be calculated by the user.

Serial port send:

01 06 17 70 00 14 8D AA

01 06 17 A2 03 E8 2D 22

01 06 17 D4 00 00 CC 46

Remote wireless transmission send:

01 06 17 70 00 14 8D AA

01 06 17 A2 03 E8 2D 22

01 06 17 D4 00 00 CC 46

8.6 RS485 pin



RS485 requires external connection of UART to RS485 chip, and this pin is used as the control pin;



When the module sends data, RS485 will be set high. In other cases, RS485 will be in the low state. The

timing is as follows.

17 70

Functi

address

code

17 A2

Functio

n code

address

17 D4

Functio

n code

address

E150-400T30S user manual

00 14

Write

CRC check

value

03 E8

Write

CRC check

value

00 00

Write

CRC check

value

8D AA

code

2D 22

code

CC 46

code

Table of Contents

Rs485 Pin - Ebyte E150-400T30S User Manual

8.6 RS485 pin

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