Read register03Write a single register06Write multiple registers10Read a single registerRead individuallyAddressFunction codeRegister addressRead several registersCRCVerificationsend out010327 1000 0112 34Return dataAddressFunction codeByte countdata VerificationCRCreturnRead a single register01030211 3312 34Write i...

AddressFunction codeRegister addressValueVerificationCRCsend outReturn data010627 1000 0112 34AddressFunction codeRegister addressValueVerificationCRCreturnWrite multiple registers010627 1000 0112 34Write multipleAddressFunction codeStarting register addressWrite a few registersByte countdata data Verificationsend o...

registers10Read a single registerRead individuallyAddressFunction codeRegister addressRead several registersCRCVerificationsend out010327 1000 0112 34Return dataAddressFunction codeByte countdata VerificationCRCreturnRead a single register01030211 3312 34Write individuallyAddressFunction codeRegister addressValueVer...

Device register manual

Jumping symbol board switch Modbus communication protocol

freeFree Technical Resource

This content is free to read, suitable for basic learning and search traffic.

modbus Technical Team

September 22, 2023 约 8 min read

Jumping symbol board switch Modbus communication protocol

Location diagram of intelligent switch register

Jumping symbol board switch Modbus communication protocolFigure

RS485 Communication mode

Address	01
Message format	HEX
Default baud rate	9600 8 N 1
CRC16	Low byte first

Function code

Read register	03
Write a single register	06
Write multiple registers	10

Read a single register

Read individually	Address	Function code	Register address	Read several registers	CRCVerification
send out	01	03	27 10	00 01	12 34

Return data

	Address	Function code	Byte count	data Verification	CRCreturn
Read a single register	01	03	02	11 33	12 34

Write individually

Address	Function code	Register address	Value	Verification	CRCsend out
Return data	01	06	27 10	00 01	12 34

Address

	Function code	Register address	Value	Verification	CRCreturn
Write multiple registers	01	06	27 10	00 01	12 34

Write multiple

Address	Function code	Starting register address	Write a few registers	Byte count	data data Verification	send out	Return data	CRCAddress
Function code	01	10	27 10	00 02	04	33 44	55 66	12 34

Starting register address

	Write a few registers	Verification	return	Register description	CRCFunction register address
Serial number	01	10	27 10	00 02	12 34

ModbusRegister Description

Function register address
Serial number	name Read/write	Register address	decimal system Register address	Base system 16Value	meaning	give an example	remarks	Address
1	Read/write	Address range	0001	0001	00 01	Switching baud rate01-FE	00 01
2	Read/write	corresponding	0002	0002	00 01	00corresponding115200 01corresponding76800 02corresponding57600 03corresponding38400 04corresponding19200 05corresponding14400 06corresponding9600 07corresponding4800 08corresponding2400 09corresponding1200	00 06	06If the modification is successful, a reply will be sent at the current baud rate9600 Switch to the new baud rate after replying Output operation
3	1-16Support reading and writing Read/write	The first byte	1001	3E9	00 01	meaningless00The second byte Close00Open01Flip02Jog03Output	00 01	Open1 relay --Read/write1
4		Output	1002	3EA			00 00	Close2 relay --Read/write2
5		Output	1003	3EB			00 02	Flip3 relay --Read/write3
6		Output	1004	3EC			00 03	Jog4 indicator light --Read/write4
7		Output	1005	3ED			00 02	Flip5 indicator light --Read/write5
8		Output	1006	3EE			00 01	open6 open --indicator light6
9		Read/write	1007	3EF			00 01	Output7 Open --Useless
10		Read/write	1008	3F0			00 01	Output8 Open --Useless
11		Read/write	1009	3F1			00 01	Output9 Open --Background light1
12		Read/write	1010	3F2			00 01	Output10 Open --Background light2
13		Read/write	1011	3F3			00 01	Output11 Open --Background light3
14		Read/write	1012	3F4			00 01	Output12 Open --Background light4
15		Read/write	1013	3F5			00 01	Output13 Open --Background light5
16		Read/write	1014	3F6			00 01	Output14 Open --Background light6
17		Read/write	1015	3F7			00 01	Output15 Open --Useless
18		Read/write	1016	3F8			00 01	Output16 Open --Useless

give an example

Read multiple registers

Read multiple	Address	Function code	Starting register address	Read several registers	CRCVerification
send out	01	03	03 E9	00 02	15 BB

Return data

	Address	Function code	Byte count	data Verification		CRCreturn
Write a single register	01	03	04	00 01 00 01		6A 33

Write individually

address	address	Function code	Register address	Value	CRCVerification
send out	01	06	00 01	00 02	59 CB

Return data

	Address	Function code	Register address	Value	CRCVerification
return	01	06	00 01	00 02	59 CB

Write multiple registers

Write multiple	Address	Function code	Starting register address	Write a few registers	Byte count	data Verification	CRCsend out
Return data	01	10	00 01	00 06	0C	00 01 00 01 00 00 01 00 00 00 00 00 00	BA 51

Address

	Function code	Starting register address	Write a few registers	Verification	CRCreturn
Product Purchase	01	10	00 01	00 06	11 CB

Product Purchase: https://item.taobao.com/item.htm?ft=t&id=671086569988

Donate Likes(1)

Related Tags crccheck modbus通讯协议数据校验状态寄存器通用寄存器

Jumping symbol board switch Modbus communication protocol

Location diagram of intelligent switch register

Function code

Read a single register

Write individually

Write multiple

ModbusRegister Description

give an example

Read multiple registers

Write individually

Write multiple registers

Turn this article into actionable debugging resources

Leave a Reply Cancel reply

Location diagram of intelligent switch register

Function code

Read a single register

Write individually

Write multiple

ModbusRegister Description

give an example

Read multiple registers

Write individually

Write multiple registers

Turn this article into actionable debugging resources

Related Resources

Leave a Reply Cancel reply