Industrial control data conversion and calculator tool - checksum/data type conversion/programmer calculator

1, The Basic Skills of Industrial Control Data Processing

CRCHow to calculate verification? 0x42A00000What is the floating-point number corresponding to this hexadecimal number? decimal system255Convert to hexadecimal isFFStill0xFF? ——These seemingly basic data processing operations, In actual debuggingHigh frequency occurrence.

modbusDebugging Assistant "provides three data conversion and calculation tools, Covering the daily data processing needs of industrial control engineers.

Two, Verify calculation tools — Multi algorithm one-stop service

The verification calculation tool is integrated8Common verification algorithms:

Flexible input methods——Hexadecimal string (Space separation or no separation is acceptable) , ASCIIText, Paste completelyModbusAutomatically remove the beginning and end recognition verification area from the message. CRC16The result can choose low byte first (ModbusStandard) Or high byte first.

Three, Data type conversion tool

One of the most headache inducing problems in industrial control communication isConversion of data types.

3.1 Supported conversions

• Binary conversion: Binary ↔ octal number system ↔ decimal system ↔ hexadecimal, support8/16/32/64Position width, Symbolic/unsigned switching
• Floating point analysis: hexadecimal ↔ IEEE 754single precision (32Position) Double precision (64Position) Floating point number. As input 0x42A00000 → Output 80.0 (Single precision)
• BCDCode conversion: BCD (Binary-Coded Decimal) ↔ decimal system. DL/T645The electricity meter protocol is widely usedBCDCode
• Byte order conversion: Big end (Big-Endian) ↔ Small end (Little-Endian) ↔ Intermediate end (Middle-Endian) Byte order reversal
• ASCII-HexMutual conversion: ASCIIcharacter string ↔ Hexadecimal bytes (Like "Hello" ↔ 48 65 6C 6C 6F)
• Bit extraction: Enter a byte/word/doublet, Extract the value of the specified bit (Like bit3=1, bit7=0)

3.2 Industrial control practical scenarios

Scene1: The electricity meter returns 4 bytes 42 A0 00 00, Using the floating-point analysis function, it is known that this is 80.0 (Active power80.0kW) .
Scene2: Variable frequency drive parameters0x2001return 03 E8 (Big end) Or E8 03 (Small end) , Confirm the actual value through byte order conversion=1000.
Scene3: DL/T645Electricity meter return 00 00 12 34, UseBCDThe parsing function reveals that the table number is 00001234.

Four, Programmer calculator

This is not an ordinary calculator, But ratherA professional calculator designed for embedded/industrial control engineers:

• Simultaneous display of multiple bases: Enter a value in any base system, Synchronized displayHEX/DEC/OCT/BINFour formats
• Positional operation: AND/OR/XOR/NOT/Left/Right/Loop Left/Loop Right
• Word length setting: 8Position (Byte) /16Position (Word) /32Position (DWord) /64Position (QWord)
• Symbolic/unsigned switching: The different decimal values of the same hexadecimal value under two interpretations
• Register operation: SimulationPLCArithmetic operations of registers (ADD/SUB/MUL/DIV)
• Common constants: One click input of common values——0xFF (255) , 0xFFFF (65535) , 0xFFFFFFFF (4294967295)

Five, Summary

3The data conversion and calculation tool is a "portable calculator" for industrial control engineers". when you need to verify one, parse a floating point number, or quickly convert base values on site, you can do it with your phoneCRC, open WeChat search, debug assistant, engineer's portable data tool box.

all tools described in this article are free to use in WeChat mini programs modbusopen WeChat, click top search.

🎯 enter

debug assistant → enter mini programs → no download modbusno registration or login → no computer required.
industrial control debugging toolAPP, can be used with your phone, whether you are on the construction site, on a business trip, or studying at home——70+ debug assistant is your portable industrial automation debugging workstation, Just take out your phone and you can use it.

No matter if you are on the construction site, on a business trip, Still studying at home, modbusDebugging assistants are all industrial automation debugging workstations that you carry with you.