Jump to content

CRC16 on a energy meter (P1 telegram)

nend

By nend,
in AutoIt General Help and Support

 Share
Go to solution Solved by Gianni,

Recommended Posts

nend Universalist

nend

Posted
Posted

In Holland almost every house holding has the same smart energy meter and this meter send out a "Telegram" data message which you can read and do what ever you want with it.
Now I want to check the CRC16 if the data is correct arrived.
I found a few scripts and try to check the CRC but the code is a bit difficult for me, is there some how can point me the right way, I found this CRC16 checksum on the forum and try to modify it
  

#include <String.au3>

$data = FileRead(@ScriptDir & "\Tel.txt")
$data = _StringBetween($data, "", "!")

;ConsoleWrite($data[0])
ConsoleWrite(_Crc16($data[0]) & @CRLF)

; =======================================================
; Function      _Crc16
; Purpose:      Return the crc16 checksum of the input value
; Author:       'roby' at http://www.autoitscript.com/forum
; =======================================================
Func _Crc16($value)
    $value = Binary($value)
    Local $crc = 0xFFFF
    Local $table[256] = [ _
            0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, _
            0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, _
            0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, _
            0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, _
            0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, _
            0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, _
            0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641, _
            0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, _
            0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, _
            0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, _
            0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, _
            0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, _
            0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, _
            0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, _
            0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, _
            0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, _
            0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, _
            0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, _
            0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, _
            0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, _
            0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, _
            0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, _
            0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, _
            0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, _
            0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, _
            0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, _
            0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, _
            0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, _
            0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, _
            0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, _
            0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, _
            0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 ]
    For $i = 1 To BinaryLen($value)
        $crc = BitXOR(BitShift($crc, 8), $table[BitAND(BitXOR($crc, BinaryMid($value, $i, 1)), 0xFF)])
    Next
    Return Hex($crc, 4)
EndFunc   ;==>_Crc16

This is the data where F7F2 is the checksum, every thing between the first character and ! character has to be calculated
  

/KFM5KAIFA-METER

1-3:0.2.8(42)
0-0:1.0.0(180605091333S)
0-0:96.1.1(4530303236303030303133343837363135)
1-0:1.8.1(001790.476*kWh)
1-0:1.8.2(002320.188*kWh)
1-0:2.8.1(000000.000*kWh)
1-0:2.8.2(000000.000*kWh)
0-0:96.14.0(0002)
1-0:1.7.0(00.258*kW)
1-0:2.7.0(00.000*kW)
0-0:96.7.21(00010)
0-0:96.7.9(00004)
1-0:99.97.0(1)(0-0:96.7.19)(000101000011W)(2147483647*s)
1-0:32.32.0(00000)
1-0:52.32.0(00000)
1-0:72.32.0(00000)
1-0:32.36.0(00000)
1-0:52.36.0(00000)
1-0:72.36.0(00000)
0-0:96.13.1()
0-0:96.13.0()
1-0:31.7.0(000*A)
1-0:51.7.0(000*A)
1-0:71.7.0(000*A)
1-0:21.7.0(00.125*kW)
1-0:22.7.0(00.000*kW)
1-0:41.7.0(00.124*kW)
1-0:42.7.0(00.000*kW)
1-0:61.7.0(00.009*kW)
1-0:62.7.0(00.000*kW)
0-1:24.1.0(003)
0-1:96.1.0(4730303235303033333436333738353136)
0-1:24.2.1(180605090000S)(05225.708*m3)
!F7F2

I found a website where it's made in Java https://github.com/jeroen13/p1-smart-meter-crc16/blob/main/p1-smart-meter-crc16.js
And I found this information
CRC is a CRC16 value calculated over the preceding characters in the data message (from ‘/’ to ‘!’ using polynomial x 16 + x15 + x2 + 1). The value is represented as 4 hexadecimal characters. MSB first.

Can somebody help me with this?

Tel.txt CRC16.au3

Link to comment
Share on other sites
argumentum Universalist

argumentum

Posted
Posted 
#include <String.au3>
$data = FileRead(@ScriptDir & "\Tel (1).txt")
$data = _StringBetween($data, "", "!")
$data[0] &= "!" ; <<<< this changed
;~ ConsoleWrite('>' & $data[0] & '<' & @CRLF)
ConsoleWrite('>>>' & _Crc16($data[0]) & '  =  !F7F2' & @CRLF)

; =======================================================
; Function      _Crc16
; Purpose:      Return the crc16 checksum of the input value
; Author:       'roby' at http://www.autoitscript.com/forum
; =======================================================
Func _Crc16($value)
    $value = Binary($value)
    Local $crc = 0xFFFF
    Local $table[256] = [ _
            0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, _
            0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, _
            0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, _
            0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, _
            0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, _
            0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, _
            0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641, _
            0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, _
            0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, _
            0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, _
            0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, _
            0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, _
            0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, _
            0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, _
            0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, _
            0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, _
            0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, _
            0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, _
            0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, _
            0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, _
            0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, _
            0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, _
            0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, _
            0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, _
            0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, _
            0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, _
            0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, _
            0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, _
            0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, _
            0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, _
            0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, _
            0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040 ]
    $crc = 0 ; <<<< this changed
    For $i = 1 To BinaryLen($value)
        $crc = BitXOR(BitShift($crc, 8), $table[BitAND(BitXOR($crc, BinaryMid($value, $i, 1)), 0xFF)])
    Next
    Return Hex($crc, 4)
EndFunc   ;==>_Crc16

 

Follow the link to my code contribution ( and other things too ).
FAQ - Please Read Before Posting.
autoit_scripter_blue_userbar.png

Link to comment
Share on other sites
  • Solution
Gianni Universalist

Gianni

Posted
  • Solution
Posted (edited)

@argumentum's version works fine here.
Aren't you using a different txt than the one you attached above?
can you try this little variant that shows the calculated crc and the one included in the different files? 

$data = FileRead(@ScriptDir & "\Tel.txt")
$iBangPos = StringInStr($data, "!")
$crcOK = StringMid($data, $iBangPos + 1, 4)
$data = StringLeft($data, $iBangPos)

ConsoleWrite('>>>' & @TAB & _Crc16($data) & '  <->  ' & $crcOK & @CRLF)

; =======================================================
; Function      _Crc16
; Purpose:      Return the crc16 checksum of the input value
; Author:       'roby' at http://www.autoitscript.com/forum
; =======================================================
Func _Crc16($value)
    $value = Binary($value)
    Local $crc = 0xFFFF
    Local $table[256] = [ _
            0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241, _
            0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440, _
            0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40, _
            0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841, _
            0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40, _
            0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41, _
            0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641, _
            0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040, _
            0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240, _
            0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441, _
            0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41, _
            0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840, _
            0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41, _
            0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40, _
            0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640, _
            0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041, _
            0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240, _
            0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441, _
            0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41, _
            0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840, _
            0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41, _
            0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40, _
            0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640, _
            0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041, _
            0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241, _
            0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440, _
            0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40, _
            0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841, _
            0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40, _
            0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41, _
            0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641, _
            0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040]
    $crc = 0 ; <<<< this changed
    For $i = 1 To BinaryLen($value)
        $crc = BitXOR(BitShift($crc, 8), $table[BitAND(BitXOR($crc, BinaryMid($value, $i, 1)), 0xFF)])
    Next
    Return Hex($crc, 4)
EndFunc   ;==>_Crc16

 

Edited by Gianni

 

image.jpeg.9f1a974c98e9f77d824b358729b089b0.jpeg Chimp

small minds discuss people average minds discuss events great minds discuss ideas.... and use AutoIt....

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...