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The LoRaWAN protocol is a protocol designed for occasional, energy-efficient wireless transmission of a small amount of data called
payload (typically several bytes) over long distances between linked objects - in LoRaWAN terminology called
mote (typically battery-powered sensors) and LoRaWAN gateway.
The gateway can then communicate directly with the D2000
COM KOM process or send the payload to the network servers or to the cloud, where data processing is performed (deduplication, filtration), followed by the data sent to the D2000
COM KOM process. In any case, the payload is packed in an
envelope (e. g. such as a field in a JSON message or in a CSV file) and transferred up to the D2000
COM KOM process. The payload is decoded there (using Base64 encoding or Base64 + Base16 encoding) and processed.
Payload processing is dependent on device type (defined in
parameter of the Device Type protocol
parameter).
The communication was tested between sensors and LoRaWAN gateway Kerlink IoT Station 868. It was, depending on the installed firmware:
- sending data directly to the D2000 COM KOM process (JSON messages in UDP packets)
- sending data to the cloud TheThings.Network, from where it was read by D2000 KOM process (JSON messages in MQTT protocol via TCP connection)
- sending data to the cloud Loriot.io, which was forwarding them via MQTT to iot.eclipse.org, from where it was read by D2000 KOM process (JSON messages in MQTT protocol via TCP connection)
- sending data to the cloud Slovanet (loralink.slovanet.sk), from where it was read by the D2000 KOM process (JSON messages in MQTT protocol via TCP connection)
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The Sigfox protocol is similar to LoRaWAN, however, and it uses different frequency bands. It uses the infrastructure built by Sigfox and its partners and messages (with a maximum payload size of 12 bytes, and a maximum frequency of 140 messages per day) are transmitted to the cloud (backend.sigfox.com) from which they can be obtained through the REST API.
The communication was tested between sensors and the Sigfox cloud using curl utility to retrieve data via https.
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- Communication line category: SerialOverUDP Device Redundant, TCP/IP-TCP, File I/O.
- Configuration of SerialOverUDP Device Redundant line:
- Local port: port, where the D2000 KOM process receives UDP packets
- Primary / Backup Device: IP address LoRaWAN gateway
(pre Connection Type=Kerlink IoT Station SPN) - Port: port, where the LoRaWAN gateway receives UDP packets (currently unused, as there is no implemented record)
- Configuration of TCP/IP-TCP line:
- Host: IP address of the server, to which the D200 KOM process connects or redundant addresses separated by a comma or semicolon
(for Connection Type=MQTT client) - Port: server port, to which the D200 KOM process connects
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- Configuration of File/IO line:
- Input file: name of the directory where data (JSON files) downloaded from the Sigfox cloud will be located. A symbolic constant #APPDIR#, which specifies application directory, may be used, e.g. #APPDIR#/Sigfox_input (valid syntax for Windows and Linux).
- Archive: name of the directory where data files will be moved after being processed. The D2000 KOM process will move the data files after processing to the subdirectories of this directory, which will be named according to respective stations (e.g B.Sigfox_1) and it will adds add a time stamp timestamp indicating the processing time (e.g. a file msg_21FDA7.txt ) may be archived as msg_21FDA7_2018-10-26 -06-26-08.txt).
Similarly to the input file, a symbolic constant #APPDIR# may be used, e.g. #APPDIR#/Sigfox_archiv
Note 1: Invalid files or files for which no station has been identified will be moved to the subdirectory BAD after processing.
Note 2: If the archive directory is not specified, all files will be deleted after processing.
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Parameter | Description | Unit / size | Default Value |
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| Type of connection between the D2000 KOM process and the other party (LoRaWAN gateway, network server, cloud). Currently supported are:- Kerlink IoT Station SPN (JSON via UDP packets): communication with Kerlink IoT Station with firmware SPN (Small Private Network). Line must be of the SerialOverUDP Device Redundant type.
- MQTT Client (JSON via MQTT): communication with a network server or cloud using MQTT protocol. Line The line must be of the TCP/IP-TCP type.
- Sigfox Client (JSON via HTTPS): communication with Sigfox cloud
| - | Kerlink IoT Station SPN |
| Name of the field with an identifier of the LoRaWAN device (mote). Note: For JSON messages that can be structured, the syntax level1.level2.level3 ... is supported e.g. rx.moteeui and if they contain fields (indexed from 1) then also the syntax level1[index1].level2[index2].level3 ... is supported e.g. rx.gwrx[1].time. For As examples, see the description of I/O tags of the Envelope type. Note: For Sigfox data files, which may contain multiple values (historical), index 0 resp. empty index (e.g. data[].device) can be used. This indicates that all field elements are to be processed. | - | rx.moteeui |
| Name of the field with the payload. See the notes next to the Mote Field Name parameter. | - | rx.userdata.payload |
| A method of payload encoding in the message. Supported encoding:- Base16 + Base64 encoding (Kerlink SPN) - for Connection Type=Kerlink IoT Station SPN
- Base64 encoding (TheThings.network) - for Connection Type=MQTT Client communicating with TheThings.network cloud
- Base64 encoding (Loriot, Slovanet, Sigfox) - for Connection Type=MQTT Client communicating with LoRaWAN clouds (Lorio, Slovanet) as well as Sigfox
- None - message contains a payload without encoding - not yet used
| - | Base16 + Base64 encoding |
| Name of the field with time stampa timestamp. If the field is not found, the current time is assigned to the values. See the notes next to the Mote Field Name parameter. | - | rx.gwrx[1].time |
| Mask for parsing a value in the field with time stampa timestamp. Note: from settings of time station parameters depends whether the time is interpreted as local or UTC with configured offset. Special masks are:- UNIX - the numeric value represents the number of seconds from epoch 00:00:00 01.01.1970 UTC.
- UNIXMS - the numeric value represents the number of miliseconds milliseconds from epoch 00:00:00.000 01.01.1970 UTC.
| - | yyyy-mm-dd hh:mi:ss |
| The name of the field that indicates indicating the message type. If the value is empty, the message type is not distinguished. (For example, cloud Loriot sends messages of a various types.) | - |
|
Frame Type Field Required Value | If the message type differentiation is active (non-empty value of Frame Type Field Name parameter), the message type must match the specified value, otherwise, the message is ignored. | - |
|
| Enabling the Writing detailed statements information about sending and receiving values in a log file. | YES/NO | NO |
Parameters specific for Connection Type=MQTT Client. |
| See the description of the User Name parameter in the MQTT protocol documentation. |
| See the description of the Password parameter in the MQTT protocol documentation. |
| See the description of the Topic Filter parameter in the MQTT protocol documentation. | +/+/+/up |
| See the description of the Subscribe QoS parameter in the MQTT protocol documentation. |
| See the description of the Client ID parameter in the MQTT protocol documentation. |
| See the description of the Clean Session Flag parameter in the MQTT protocol documentation. |
| Format of JSON message used while writing a value. The content of the I/O tag of Write type will be encoded (depending on the Payload Encoding parameter) and inserted into the message, where it will replace the #PAY# string. The default value "{"port":1, "confirmed":false, "payload_raw":#PAY#} was tested when sending data to cloud TheThings.Network. | - | "{"port":1, "confirmed":false, "payload_raw":#PAY#} |
| See the description of the Publish QoS parameter in the MQTT protocol documentation. |
| See the description of the Ping Interval parameter in the MQTT protocol documentation. |
| See the description of the Reply Timeout parameter in the MQTT protocol documentation. |
| See the description of the Wait Timeout parameter in the MQTT protocol documentation. |
| See the description of the Max. Wait Retry parameter in the MQTT protocol documentation. |
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Line parameters tested for Connection Type=MQTT client for Loriot.io with the following setup:
- Output via protocol MQTT
- MQTT broker: iot.eclipse.org
- MQTT topic: com/ipesoft/iot
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- Communication protocol "IoT over LoRaWAN/Sigfox".
- Station address: the address of the station is the identifier of the specific device (mote) that is in the Mote Field Name field.
- for Connection Type=Kerlink IoT Station SPN address is a text representation of an 8-byte LoRaWAN address (e.g. 00-00-00-00-21-1a-e3-c8)
- for Connection Type=MQTT Client the address may be a text representation of an 8-byte LoRaWAN address (e.g. 0018B2000000147D) or a symbolic address defined within the MQTT server (e.g. fieldtestdevice)
- for Connection Type=Sigfox Client (JSON via HTTPS) address is a device identifier (e.g. 21FDA5)
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Parameter | Description | Unit | Default Value |
| Type of device. Each device type may have its own structure of transmitted data (payload). The list of supported devices will gradually increase. Currently supported devices are:- None - no device
- OEM device - payload parsing is performed by an external library (dll library)
- Adeunis RF Field Test Device - test device sending GPS position data and temperature data
- SolidusTech IndoorUNI Sensor - indoor temperature and humidity meter
- SolidusTech miniUNI DS18B20 Sensor - temperature meter for outdoor use
- Adeunis RF LoRaWAN TEMP (ARF8180BA) - temperature meter for outdoor use with two independent temperature sensors
- Codea WZU-SG (Landis+Gyr Ultraheat T550) - radiomodule radio module WZU-SG by Codea for heat meter Landis+Gyr UH50/UC50/T550
| - | None |
| Name of external DLL library with code for payload parsing for Device Type=OEM device. | - |
|
| Timeout after which the station goes into a communication error state if no data has been received. | hh:mi:ss | 01:00:00 |
| Topic The topic used when writing the value (for Connection Type=MQTT client). Note: for ipesoft-test user and fieldtestdevice device writing was tested towards TheThings.network with MQTT_TOPIC=ipesoft-test/devices/fieldtestdevice/down. | - |
|
Sigfox Download Command File | For Sigfox: the path to the file for downloading data from the Sigfox cloud to the input directory (specified by parameter Input file of the File I/O line) together with possible parameters. The path may contain (like the Input File parameter) the symbolic constant #APPDIR# (application directory) as well as #ADDR# (station address) so that a single file can be used to handle multiple stations. Example for Windows: #APPDIR#/Sigfox_cmd/get.bat #ADDR# Example for Linux: /bin/sh #APPDIR#/Sigfox_cmd/get.sh #ADDR# Note: this parameter does not have to be entered if an independent mechanism is used to download the data.
The download itself can use the curl utility to perform a an HTTPS GET query against the sigfox Sigfox web server. Example for Windows platform - file get.bat (download is via a proxy server, server identity verification is disabled, xxx:yyy is user name and password for Sigfox cloud): rem default count=1, possible to download upto up to 100 values set count=1 rem ID of the device is 1st parameter set id=%1 c:\utils\curl.exe --proxy http://proxy:3128 --insecure -u xxx:yyy -o msg_%id%.txt https://backend.sigfox.com/api/devices/%id%/messages?limit=%count%
Example for Linux platform - file get.sh (it is necessary to explicitly specify that files are downloaded e.g. to Sigfox_input directory): #/bin/sh# default count=1, possible to download upto 100 values count=1 base=$(dirname "$0") #ID of device is 1st parameter id=$1 #name of downloaded data file (including directory) datafile=$base/../Sigfox_input/msg_$id.txt /usr/bin/curl --proxy http://proxy:3128 --insecure -u xxx:yyy -o $datafile https://backend.sigfox.com/api/devices/$id/messages?limit=$count
Note: if command files are edited prior to running the D2000 KOM process, parameter count can be increased upto up to 100, resulting in downloading not only the latest value , but also previous (upto up to 99) historical values. Then, after the first polling, the parameter count can be decreased to 1.
|
|
|
| For Sigfox: timeout for downloading data via Sigfox Download Command File. If downloading takes longer, the station will go to error. | sec | 30 |
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Value type | Address (address type) | Description |
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Ai, Di, Ci, Qi, TxtI | | I/O tags parsed from the payload. Address (Address) depends on the device type (Device Type parameter). Address The address is not case sensitive. A special case is a blank address - the I/O tag will contain the entire payload (after relevant decoding depending on the Payload Encoding parameter). The following tables indicate the addresses for each device type:
Payload addresses for the device type of OEM Device: The address depends on the specific implementation (dll library).
Payload addresses for device type Adeunis RF Field Test Device
Address | Description |
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Status | Status byte of device. | TriggerAccelerometer | The True value means that the sending of the message sending was initiated by an accelerometer. | TriggerButton | The True value means that the sending of the message sending was initiated by a button. | Temperature | Measured temperature (-128 °C .. 127°C). | GpsLatitude | Latitude (0-90 degrees) from the GPS sensor. Note: GPS data may be missing if the device has no GPS signal. | HemisphereSouth | The True value means that the latitude is south (the device is in the southern hemisphere). | GpsLongitude | Longitude (0-180 degrees) from the GPS sensor. | HemisphereWest | The True value means that the latitude is west (the device is in the western hemisphere). | GpsQualityReception | GPS signal reception quality: 1 Good, 2 Average, 3 Poor | QpsQualitySatellites | Number The number of visible GPS satellites. | UplinkCounter | Packet uplink counter (packets sent from the device to the LoRaWAN gateway). | DownlinkCounter | Packet uplink counter (packets sent to the device from the LoRaWAN gateway). | BatteryLevel | Battery voltage in mV. | RSSI | Indicator of the strength of the received signal (Received Signal Strength Indicator) - value between 0-255. Payload The payload contains the field only if it if a write has been previously been written performed to the device (sending data from the LoRaWAN gateway to the device). | SNR | Signal Noise Ratio v dB (-128 .. 127). Payload The payload contains the field only if it if a write has been previously been written performed to the device (sending data from the LoRaWAN gateway to the device). |
Payload addresses for device type SolidusTech IndoorUNI Sensor
Address | Description |
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ADR | Adaptive Data Rate (optimizing data transfer speed and energy consumption). Value True indicates that ADR is on. | DataRate | Data Rate (data transmission rate) 0-5. | SNR | Signal Noise Ratio v dB (-128 .. 128). | BatteryLevel | Battery voltage in mV. | Temperature | Temperature (-125.99°C .. 125.99°C) with 0.1°C resolution. | Humidity | Relative humidity (0.0%-100%) with 0.1% resolution. | PowerAdapter | The True value means that the device is connected to a power adapter, the False value means that it is powered by a battery (always False for firmware version FW 0.2.2 and lower). | Contact | The True value means that an auxiliary contact is switched on (always False for firmware version FW 0.2.2 and lower). |
Payload addresses for device type SolidusTech miniUNI DS18B20 Sensor
Address | Description |
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BatteryLevel | Battery voltage in mV. | SNR | Signal Noise Ratio of the previous payload in dB. It applies after ACK is received. Value 127 indicates an undefined value (no ACK or downlink packet was received from LoRaWAN gateway). | Temperature | Temperature (-25°C .. 85°C) with resolution 0.1°C. |
Payload addresses for device type Adeunis RF LoRaWAN TEMP (ARF8180BA)
Address | Description |
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FrameCounter | Internal message counter going from 0 to 7. | BatteryLow | Low battery indicator. Has values True or False. | HWError | Indicator of hardware error in a device (temperature sensor error etc.). | InternalTemp | The value of the temperature sensor located in the device housing with a resolution of 0.1 °C. | ExternalTemp | The value of the temperature sensor located on an external wire with a resolution of 0.1 °C. |
Payload addresses for device type Codea WZU-SG (Landis+Gyr Ultraheat T550) Address | Popis |
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Energy | Current amount of energy (in hundredths of GJ) | Volume | Current volume (in tenth of m3) | ErrorFlag | Error flag | MissingTime | Number of error hours (in hours) | Status | Status of module-reason for sending data: 0x00 - Ok 0x10 - Error of reading a meter (bat format of E,V data..) 0x20 - Install 0x30 - JMP 0x40 - Error of meter |
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Ai, Di, Ci, Qi, TxtI | | I/O tag parsed from the envelope of the message. The address is the name of the field in the envelope of the message. Note: For JSON messages that can be structured, the syntax level1.level2.level3 ... is supported, e.g. rx.moteeui and if they contain fields (indexed from 1) then also level1[index1].level2[index2].level3 ... syntax, e.g. rx.gwrx[1].time.
Example of JSON message for Connection Type=Kerlink IoT Station SPN (added spacing and alignment for better legibility):
{
"rx": {
"moteeui": "00-00-00-00-00-1e-fc-1d",
"userdata": {
"seqno": 77,
"port": 1,
"payload": "NzM3RjAwZTgwMA==",
"motetx": {
"freq": 868500000,
"modu": "LoRa",
"datr": "SF7BW125",
"codr": "4/5"
}
},
"gwrx": [
{
"time": "2017-07-05 16:06:52",
"chan": 2,
"rfch": 0,
"rssi": -33,
"lsnr": 7.5
}
]
}
}
I/O tags of envelope may have addresses e.g. rx.moteeui, rx.userdata.seqno, rx.userdata.motetx.freq, rx.gwrx[1].time.
Example of JSON message for Connection Type=MQTT Client (JSON via MQTT) (added spacing and alignment for better legibility):
{
"app_id":"ipesoft-test",
"dev_id":"fieldtestdevice",
"hardware_serial":"0018B2000000147D",
"port":2,
"counter":549,
"payload_raw":"niNJElVwAYQ5UBYfBBBN",
"metadata":{
"time":"2017-08-10T08:12:26.06860368Z",
"frequency":867.5,
"modulation":"LORA",
"data_rate":"SF7BW125",
"coding_rate":"4/5",
"gateways":[
{
"gtw_id":"eui-000000000003080b",
"timestamp":705621508,
"time":"2017-08-10T08:12:26.434682Z",
"channel":5,
"rssi":-34,
"snr":7.8,
"latitude":49.20927,
"longitude":18.73184,
"altitude":359
}
]
}
}
I/O tags of envelope may have addresses e.g. dev_id, metadata.time, metadata.gateways[1].latitude. |
TxtI | | I/O tag, that will contain the complete received message - the whole envelope (e.g. JSON message). The I/O tag is intended for debugging purposes and for eventual processing of the entire message in the script. |
TxtO | Kotva |
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| pt_write_mqtt |
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| pt_write_mqtt |
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|
Write (MQTT) | I/O tag for writing. Currently implemented just for Connection Type=MQTT client and tested towards cloud TheThings.Network. The value of the I/O tag is considered to be a payload that will be encoded (depending on the Payload Encoding parameter) and inserted into the message template defined by the MQTT Publish Format parameter, where it will replace the #PAY# string. The resulting message will be sent to the MQTT server. |
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