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IP & Port configuration
The Gateway needs a dedicated IP address on the same VLAN as the Modbus automate. It can be set up as DHCP or static IP.
The default configuration is static IP
address:
192.168.1.100netmask:
255.255.255.0gateway:
192.168.1.1
The Gateway should be synchronized to a NTP server in order to have valid timestamps of the LoRaWAN payload.
The default NTP servers configured are 0.pool.ntp.org and 1.pool.ntp.org, however this won't be valid if the Gateway doesn't have internet access.
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Support ports are only used if you need a remote support session from Wi6labs support team |
LoRaWAN devices
The device must be added in µWiotys with the following parameters:
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Once the configuration is loaded on the Gateway, all devices and corresponding Modbus tables will initialise after reboot.
Output Data
Modbus
The modbus starts on the VLAN IP address with the standard modbus port 502. Each device will be seen by the controller as an individual slave, available slave ID are 1 to 200.
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Note that our µWiotys Modbus registers are formatted with Big-Endian Representation & Zero-based numbering
Type of value used
Data type | register size | description | range |
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U16 | 1 | unsigned integer | [ 0 : 65 535 ] |
U32 | 2 | unsigned integer word swapping | [ 0 : 4 294 967 295 ] |
U64 | 4 | unsigned integer word swapping | [ 0 : 18 446 744 073 709 551 615 ] |
S16 | 1 | signed integer | [ -32 768 : +32 767 ] |
S32 | 2 | signed integer word swapping | [ -2 147 483 648 : +2 147 483 647 ] |
S64 | 4 | signed integer word swapping | [ -9 223 372 036 854 775 808 : +9 223 372 036 854 775 807 ] |
Float (F64/F32) | 2 | Floating point non-swap (abcd) | NA |
To read float, see an exemple at FAQ.
Byte order representation
Swap Mode | Source 4-Byte | Target Bytes | Modbus Register Order | |||||||
N/A | [ a b c d ] | [ a b ][ c d ] | => Wi6labs format | |||||||
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Common table
All slaves share a common table with these informations:
DevEUI
Reference ID
Last timestamp
Measurement table
The Measurement table is specific to each device type (Temperature, Industrial,...) without any differences between manufacturer. The data specific to each device type (temperature, voltage,...) will only be available after the first Lora payload is received and will be updated with each new payload.
All the register information is defined in modbus dictionary.
BACnet
µWiotys supports BACnet protocol (from version 3.4.0).
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In a µWiotys LoRaWAN network, a Gateway is the main BACnet object.
This object owns its virtual devices → the sensors. You can visualize the several entries for each sensor.
Adding a sensor in Bacnet
There are no specific operation to do to add a new sensor for BACnet. You can use the Online support interface (https://app.uwiotys.com/index.php/device/list ) to create your infrastructure.
Only Analog input (AI) and Analog values (AV) are currently supported.
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For BACnet : In the “Modbus address” you can choose any number for BACnet ID but it has to follow each other (if you want to start with 13 through 20, you have to set 13,14,15,16…20) in 3.4.0 |
HTTP REST data server
µwiotys provide an http rest output. This output is configurable by FTP (see Output configuration). An HTTP request will be sent for each frame received in µWiotys, your server must respond with 200 OK.
The json sent will contain informations of the common table and the measured value.
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If your server miss the request, all the data sent can be retrieve using the FTP in /uwiotys/log/uwiotys_functionnal.log or using the data logger CSV output.
Data logger
µWiotys provide a CSV output. This output is configurable by FTP (see output-configuration).
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