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Tesenso M-Bus LoRaWAN

Product documentation

Quickstart

QuickStart Guide EN
QuickStart Guide DE
Tesenso M-Bus QuickStart Guide V3.2-EN.pdf
469KB
PDF
Tesenso M-Bus QuickStart Guide V3.2-DE.pdf
476KB
PDF

Product Datasheet

Datenblatt DE
Datasheet EN
Tesenso M-Bus Datenblatt.pdf
230KB
PDF
Tesenso M-Bus Datasheet.pdf
228KB
PDF
V2.0 (currrent version)
V2.1

M-BUS message formats

Name:
Length
MsgType
Data depending on MsgType
Unit:
Enum
Bytes
Range:
0..255
0..127
Uplink message port:
2
Uplink message port for split messages
12
Status Uplink message port:
50

ENUM definitions

MsgType Enum
Text
Text
0
0
Status message
1
1
Scan Result
2
2
Telegram Response
3
3
Read Meter
4
4
Read Meter Raw
...
123
7B
HW_ID_UL
124
7C
MCU_ID_UL
125
7D
Firmware_hash
Port for ID-s (123-125) is 200

Message Types

0: Status message

Port 50
Name:
Length
MsgType
Voltage
Temp
Saved slaves
Read interval
Flags
Status interval
Text
Unit:
Enum
1/100 -170
Count
Min(s)
Min(s)
Bytes
1
1
1
1
1
1
1
MSB
LSB
Range:
8
0
Example
08
0
08 00 9e 30 00 03 a0 05 a0

1: Scan Result

Name:
Length
MsgType
slave addresses
Text
Unit:
Enum
Bytes
1
1
X
Range:
1

2: Telegram Response

Name:
Length
MsgType
Slave response
Text
Unit:
Enum
Bytes
1
1
X
Range:
2

3: Read Meter

3: Read Meter
Text
Meter properties block
Meter properties block
Text
Text
Text
Text
Text
Text
Text
Text
Text
Text
Text
Name:
Length
MsgType
no. of slaves
ID
Medium
VIF
Volume
...
Unit:
Enum
count
BCD encoded
BCD encoded
Bytes
1
1
1
1
1
1
1
1
1
1
1
1
1
10
Range:
3
HighByte
LowByte
HighByte
LowByte

4: Read Meter Raw

Port 2
Text
Text
Text
Text
Text
Has to be decoded in the backend (contains all information)
Name:
Length
MsgType
Slave No.
Full response telegram
Unit:
Enum
Byte
Bytes
1
1
1
X
Range:
4

4: Read Meter Raw SPLIT

Port 12
Text
Text
Text
Text
Text
Text
Has to be decoded in the backend (contains all information)
Name:
Length
MsgType
Slave No.
Pointer
Full response telegram
Unit:
Enum
Byte
Byte
Bytes
1
1
1
1
X
Range:
4

123: HW_ID_UL

Name:
MsgType
HWID
Unit:
Enum
version
Bytes
123
Range:
0..7

124: MCU_ID_UL

Name:
MsgType
MCU_ID
Text
Text
Text
Unit:
Enum
Bytes
124
HighByte
LowByte
Range:

125: Firmware_hash_UL

Name:
MsgType
Firmware version and hash
Text
Text
Unit:
Enum
String
Bytes
125
Size varies
Range:
(not available yet, coming soon)
// V3.0 10.05.2022, copyright by Tesenso GmbH
//Code entry
if (msg.data) {
var decoded = decodeFromHex(msg.data);
decoded.ts = msg.ts;
decoded.rssi = msg.rssi;
decoded.snr = msg.snr;
decoded.toa = msg.toa;
decoded.frequency = msg.frequency;
decoded.dr = msg.dr;
decoded.bat = decodeBattery(msg.bat);
decoded.hex = msg.data;
return {
msg: decoded,
metadata: metadata,
msgType: msgType
};
} else {
return {
msg: msg,
metadata: metadata,
msgType: msgType
};
}
function decodeFromHex(data) {
// Decode uplink message
var decoded = {};
//Parse string as bytes
var bytes = parseHexString(data);
//scale to manage the different scales with none, one or more decimals on the meter.
var scale = metadata.ss_scale;
//various info that can be extracted
var length = bytes[0];
var msgType = bytes[1];
var slaveCount = bytes[2];
var startCharacter1 = bytes[3];
var length1 = bytes[4];
var length2 = bytes[5];
var startCharacter2 = bytes[6];
var c = bytes[7];
var a = bytes[8];
//72 or 76 -> variable; 73 or 77 -> fixed
var ciField = bytes[9];
var medium = data.substr(34, 2);
var checkSum = bytes[36];
//Different medium IDs, register positions vary
if (medium == "02") {
var volume = data.substr(72, 2) + data.substr(70,
2) + data.substr(68, 2) + data.substr(66, 2);
decoded.electricityMeterEnergyHt = parseInt(volume,
16) * scale;
volume = data.substr(88, 2) + data.substr(86, 2) +
data.substr(84, 2) + data.substr(82, 2);
decoded.electricityMeterEnergyNt = parseInt(volume,
16) * scale;
}
if (medium == "03") {
var volume = data.substr(66, 2) + data.substr(64,
2) + data.substr(62, 2) + data.substr(60, 2);
decoded.gasMeterVolume = parseInt(volume) * scale;
}
if (medium == "16") {
var volume = data.substr(54, 2) + data.substr(52,
2) + data.substr(50, 2) + data.substr(48, 2);
decoded.waterMeter = parseInt(volume, 16) * scale;
}
return decoded;
}
//Helper functions
function parseHexString(hex) {
for (var bytes = [], c = 0; c < hex.length; c += 2)
bytes.push(parseInt(hex.substr(c, 2), 16));
return bytes;
}
function decodeBattery(byte) {
if (byte == 0) {
return 'External power source';
} else if (byte > 0 && byte < 255) {
return byte / 254 * 100;
} else {
return 'Unknown battery state';
}
}
function parseFloat(str) {
var float = 0,
sign, order, mantissa, exp,
int = 0,
multi = 1;
if (/^0x/.exec(str)) {
int = parseInt(str, 16);
} else {
for (var i = str.length - 1; i >= 0; i -= 1) {
if (str.charCodeAt(i) > 255) {
console.log('Wrong string parameter');
return false;
}
int += str.charCodeAt(i) * multi;
multi *= 256;
}
}
sign = (int >>> 31) ? -1 : 1;
exp = (int >>> 23 & 0xff) - 127;
mantissa = ((int & 0x7fffff) + 0x800000).toString(2);
for (i = 0; i < mantissa.length; i += 1) {
float += parseInt(mantissa[i]) ? Math.pow(2, exp) :
0;
exp--;
}
return float * sign;
}
All Downlinks shall be sent on Port 3

Add secundary adress manually to EEPROM

Name:
Length
MsgType
ID
Text
Text
Text
Unit:
Enum
BCD encoded
Bytes
1
1
1
1
1
1
Range:
5
133
HighByte
LowByte
  • 05 --> Length
  • 85 --> MsgType
  • 17670401 --> secondaryAdress of the meter
058517670401
Name:
Length
MsgType
Retry
Unit:
Enum
Bytes
1
1
1
Range:
2
130
0..3
  • 02 --> Length
  • 82 --> MsgType
  • 01 --> Retry
028201

Delete saved slaves from EEPROM

Name:
Length
MsgType
Unit:
Enum
Bytes
1
1
Range:
1
131
  • 01 --> Length
  • 83 --> MsgType
0183

Change send Intervall:

Message Types
Text
Text
Text
Text
Text
Text
Name:
Length
MsgType
Flags
status msg interval
Meter interval
Unit:
Enum
Min(s)
Min(s)
Bytes
1
1
1
MSB
LSB
1
Range:
0..255
128
sample downlinks to change the intervall:
  • 05800000001E --> 30 minutes
  • 05800000000F --> 15minutes
  • 058000000005 --> 5minutes

Troubleshoot Checklist:

  • take a photo of the meter and the full installation
  • power device
  • make sure that the connection (wires/cables) are connected correctly