Modbus online debugging tool
The mini program version has been launched
Scan the code on WeChat and open the Modbus debugging tool with you
On site inspection, equipment acceptance, temporary code calculation, no need to install software. Open the mini program to use common functions such as RTU/TCP/ASCII, CRC check, serial port debugging, etc.
Ready to use on-site
Scan QR code with phone
Common command generation
Verification calculation
Scan WeChat and use the mini program version immediately
Modbus RTU Request Command Generator Mini Program Version
Slave address (decimal or hexadecimal)
Starting register address
Reading quantity
Generated Request Command (HEX)
Click the 'Generate Command' button to generate
Modbus RTU Response Message Generator
Generated response message (HEX)
Click the 'Generate Response' button to generate
📋 Response history（0)
No historical records available at the moment
Modbus RTU message parser
Analyze rule configuration
Modbus RTU CRC 16 checksum calculator
Modbus TCP Request Command Generator Mini Program Version
Reading quantity
Generated request data
Click the 'Generate Request' button to generate
Request command structure parsing
| field | 值 |
|---|---|
| Waiting for data .. | |
Modbus TCP Response Message Generator
Generated response data
Click the 'Generate Response' button to generate
Response structure analysis
| field | 值 |
|---|---|
| Waiting for data .. | |
📋 TCP Response History（0)
No historical records available at the moment
Modbus TCP packet parser
Input Modbus TCP data (e.g. 00 01 00 00 0F 01 03 0C 40 48 F5 C3 00 00 01 3A C6 FE FF FF)
Modbus ASCII Request Command Generator Mini Program Version
Reading quantity
Generated request command
Click the 'Generate Request' button to generate
Request command structure parsing
| Waiting for data .. |
Modbus ASCII Response Message Generator
Generated response data
Click the 'Generate Response' button to generate
Response structure analysis
| Waiting for data .. |
Modbus ASCII Message Parser
Input Modbus ASCII data (e.g. 01030C4048F5C30000013AC6FEFFFFB3)
Modbus ASCII LRC checksum calculator
Enter hexadecimal data separated by spaces (e.g. 01 03 00 01 00 02)
📋 LRC History
No historical records available at the moment
Modbus ASCII Format Description
- Start marking:Colon (:)
- End marker:CR LF (Enter and Line Break)
- Verification method:LRC (Longitudinal Redundancy Check) replaces CRC
- Encoding method:All data is represented using ASCII characters
- Data format:NNFFAADRQQLRCCC (N=slave, FF=function code, AA=starting address, DD=data, RR=length, LRC=checksum)
- Advantages:Easy to debug, supports more devices, and is easy to transmit through serial port
Serial port configuration
Log information
Modbus mode
MS
Generated commands
Waiting for command generation ..
Log Window
Waiting for connection ..
Modbus Data Analysis
Add parsing rules
| Rule Name | Register number | data type | endianness | coefficient | constant | decimal places | Operation |
|---|---|---|---|---|---|---|---|
Original message
| Serial number | time | message |
|---|---|---|
| No data available | ||
Total : 0
Serial port parameters Mini Program Version
Counting area
Number of frames sent:
0
Number of bytes sent:
0
Received frame rate:
0
Received bytes:
0
Control area
Sending and receiving messages
Sending area configuration
send1区
send2区
send3区
send4区
send5区
send6区
Serial port parameters Mini Program Version
Not connected
Communication statistics
Sending frame rate
0
Send bytes
0
frames received
0
Receive bytes
0
Error count
0
IO configuration
Output status (relay)
input state
Command control
auto query
Command log
[System]
The relay control module is ready, please connect the serial port ..
