User Manual

Chengdu Ebyte Electronic Technology Co., Ltd. E108-D01 User Manual
Copyright ©2012–2022, Chengdu Ebyte Electronic Technology Co., Ltd.
12
Address
Function code
Data length
data
CRC check
0x01
0x03
0x02
0x00 0x10
0xB9 0x88
Note:
The version number in the returned data is 0x0010, indicating that the version number is V1.0.
5.2.2 Read device address (broadcast)
Command frame: 00 03 00 02 00 01 24 1B
Address
Function code
Register start address
Number of
registers
CRC check
0x00
0x03
0x00 0x02
0x00 0x01
0x24 0x1B
Response frame: 00 03 02 00 01 44 44
Address
Function code
Data length
data
CRC check
0x00
0x03
0x02
0x00 0x01
0x44 0x44
NoteThis command is a general read command of the address. When using the broadcast command, to avoid
conflicts with other devices in the system, please ensure that only the device to be read is connected to the bus when
reading.
5.2.3 Read device baud rate
Command frame: 01 03 00 03 00 01 74 0A
Address
Function code
Register start address
Number of
registers
CRC check
0x01
0x03
0x00 0x03
0x00 0x01
0x74 0x0A
Response frame: 01 03 02 00 03 F8 45
Address
Function code
Data length
data
CRC check
0x01
0x03
0x02
0x00 0x03
0xF8 0x45
Note:
The returned baud rate is 0x03, which means 9600 bps. For other baud rate codes, see the description of "Modbus
register table".
5.2.4 Read parity
Command frame: 01 03 00 04 00 01 C5 C8
Address
Function code
Register start address
Number of
registers
CRC check
0x01
0x03
0x00 0x04
0x00 0x01
0xC5 0xC8
Response frame: 01 03 02 00 00 B8 44
Address
Function code
Data length
data
CRC check
0x01
0x03
0x02
0x00 0x00
0xB8 0x44
Note: The return check digit is 0x00, which means no parity check. See the description of "Modbus register table"