p1-smart-meter-crc16

A CRC / CRC16 / CRC16-ARC / CRC16-IBM calculation for P1 Smart meter telegrams in JavaScript

This CRC is a CRC16 value calculated over the preceding characters in the data message (from “/” to “!” using the polynomial: x^16+x^15+x^2+1). CRC16 uses no XOR in, no XOR out and is computed with least significant bit first. The value is represented as 4 hexadecimal charaters (MSB first).

Tested with ESMR5.0 on a CTA5ZIV-METER using Node-Red JS

Usage:

Include the p1-smart-meter-crc16.js file.

/*  ==========================================================================

                                Example usage code

    Example telegram: https://raw.githubusercontent.com/nlrb/nl.dsmr.p1/master/node_modules/node-dsmr-parser/example-telegram.txt

==========================================================================  */


var CRC_is_Valid = calcCRC16(`/ISk5\\2MT382-1000

1-3:0.2.8(40)
0-0:1.0.0(101209113020W)
0-0:96.1.1(4B384547303034303436333935353037)
1-0:1.8.1(123456.789*kWh)
1-0:1.8.2(123456.789*kWh)
1-0:2.8.1(123456.789*kWh)
1-0:2.8.2(123456.789*kWh)
0-0:96.14.0(0002)
1-0:1.7.0(01.193*kW)
1-0:2.7.0(00.000*kW)
0-0:17.0.0(016.1*kW)
0-0:96.3.10(1)
0-0:96.7.21(00004)
0-0:96.7.9(00002)
1-0:99:97.0(2)(0:96.7.19)(101208152415W)(0000000240*s)(101208151004W)(00000000301*s)
1-0:32.32.0(00002)
1-0:52.32.0(00001)
1-0:72:32.0(00000)
1-0:32.36.0(00000)
1-0:52.36.0(00003)
1-0:72.36.0(00000)
0-0:96.13.1(3031203631203831)
0-0:96.13.0(303132333435363738393A3B3C3D3E3F303132333435363738393A3B3C3D3E3F303132333435363738393A3B3C3D3E3F303132333435363738393A3B3C3D3E3F303132333435363738393A3B3C3D3E3F)
0-1:24.1.0(03)
0-1:96.1.0(3232323241424344313233343536373839)
0-1:24.2.1(101209110000W)(12785.123*m3)
0-1:24.4.0(1)
!F46A`, true)

// Output the true / false
console.log("CRC valid? " + CRC_is_Valid);

Output> CRC valid? true

tags

CRC16/IBM, CRC16-IBM, CRC16-ARC, CRC16 0xA001, CRC16 Javascript, CRC Javascript, P1 Smart meter checksum, P1 Smart meter CRC, Slimme meter CRC, Smart meter CRC, P1 CRC, P1 CRC16 berekening, P1 CRC16, P1 Smart meter CRC16