[HELP] Can't access data with Bacnet

[mgruenberger21]

Hello,

I cantt access data of a heating system with bacnet using thingsboard-gateway. When I use Yabe, I can accesss all the things I want to know. But when requesting data with thingsboard-gateway, I dont get any answer of the heating system to my request.

e.g. the request for this value shold look like this I think:
{
"general": {
"objectName": "tb-gateway",
"address": "0.0.0.0:47808",
"objectIdentifier": 599,
"maxApduLengthAccepted": 1476,
"segmentationSupported": "segmentedBoth",
"vendorIdentifier": 15
},
"devices": [
{
"deviceName": "BACnet Device ${objectName}",
"deviceType": "default",
"address": "IPADDR:47808",
"pollPeriod": 10000,
"attributes": [
{
"key": "Außentemperatur Kessel 1",
"type": "double",
"objectId": "analogInput:239",
"propertyId": "presentValue"
}
]
}
],
"logLevel": "DEBUG",
"name": "Bacnet",
"enableRemoteLogging": true,
"id": "ac5e542d-623b-432a-9a96-04fe82655e34"
}

Debug-Logs of thingsboard-gateway:

b-gateway | 2024-09-04 11:50:37 - |INFO| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - _process_config_request - 204 - Configuration update request received.
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - _process_config_request - 205 - Got config update request: {'active_connectors': ['Bacnet']}
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - _handle_active_connectors_update - 404 - Processing active connectors configuration update...
tb-gateway | 2024-09-04 11:50:37 - |INFO| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - _process_config_request - 204 - Configuration update request received.
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - _process_config_request - 205 - Got config update request: {'Bacnet': {'mode': 'basic', 'name': 'Bacnet', 'type': 'bacnet', 'enableRemoteLogging': True, 'logLevel': 'DEBUG', 'sendDataOnlyOnChange': False, 'configuration': 'bacnet.json', 'configurationJson': {'general': {'objectName': 'tb-gateway', 'address': '0.0.0.0:47808', 'objectIdentifier': 599, 'maxApduLengthAccepted': 1476, 'segmentationSupported': 'segmentedBoth', 'vendorIdentifier': 15}, 'devices': [{'deviceName': 'BACnet Device ${objectName}', 'deviceType': 'default', 'address': 'IP-ADDR:47808', 'pollPeriod': 10000, 'attributes': [{'key': 'Außentemperatur Kessel 1', 'type': 'double', 'objectId': 'analogInput:239', 'propertyId': 'presentValue'}]}], 'logLevel': 'DEBUG', 'name': 'Bacnet', 'enableRemoteLogging': True, 'id': 'ac5e542d-623b-432a-9a96-04fe82655e34'}, 'ts': 1725450637146, 'key': 'auto', 'basicConfig': {'general': {'objectName': 'tb-gateway', 'address': '0.0.0.0:47808', 'objectIdentifier': 599, 'maxApduLengthAccepted': 1476, 'segmentationSupported': 'segmentedBoth', 'vendorIdentifier': 15}, 'devices': [{'deviceName': 'BACnet Device ${objectName}', 'deviceType': 'default', 'address': 'IP-ADDR:47808', 'pollPeriod': 10000, 'attributes': [{'key': 'Außentemperatur Kessel 1', 'type': 'double', 'objectId': 'analogInput:239', 'propertyId': 'presentValue'}]}], 'logLevel': 'DEBUG', 'name': 'Bacnet', 'enableRemoteLogging': True, 'id': 'ac5e542d-623b-432a-9a96-04fe82655e34'}}}
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - _handle_connector_configuration_update - 449 - Processing connectors configuration update...
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - create_configuration_file_backup - 757 - Backup file created for configuration file bacnet.json in /thingsboard_gateway/config/backup/bacnet.backup.1725450637.json
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [bacnet_connector.py] - bacnet_connector - scan_network - 226 - WhoIsRequest has been sent.
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [bacnet_connector.py] - bacnet_connector - run - 80 - WhoIsRequest has been sent.
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [bacnet_connector.py] - bacnet_connector - scan_network - 226 - WhoIsRequest has been sent.
tb-gateway | 2024-09-04 11:50:37 - |INFO| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - _process_config_request - 204 - Configuration update request received.
tb-gateway | 2024-09-04 11:50:37 - |DEBUG| - [tb_gateway_remote_configurator.py] - tb_gateway_remote_configurator - _process_config_request - 205 - Got config update request: {'Bacnet': {'mode': 'basic', 'name': 'Bacnet', 'type': 'bacnet', 'enableRemoteLogging': True, 'logLevel': 'DEBUG', 'sendDataOnlyOnChange': False, 'configuration': 'bacnet.json', 'configurationJson': {'general': {'objectName': 'tb-gateway', 'address': '0.0.0.0:47808', 'objectIdentifier': 599, 'maxApduLengthAccepted': 1476, 'segmentationSupported': 'segmentedBoth', 'vendorIdentifier': 15}, 'devices': [{'deviceName': 'BACnet Device ${objectName}', 'deviceType': 'default', 'address': 'IP-ADDR:47808', 'pollPeriod': 10000, 'attributes': [{'key': 'Außentemperatur Kessel 1', 'type': 'double', 'objectId': 'analogInput:239', 'propertyId': 'presentValue'}]}], 'logLevel': 'DEBUG', 'name': 'Bacnet', 'enableRemoteLogging': True, 'id': 'ac5e542d-623b-432a-9a96-04fe82655e34'}, 'ts': 1725450637146, 'key': 'auto', 'basicConfig': {'general': {'objectName': 'tb-gateway', 'address': '0.0.0.0:47808', 'objectIdentifier': 599, 'maxApduLengthAccepted': 1476, 'segmentationSupported': 'segmentedBoth', 'vendorIdentifier': 15}, 'devices': [{'deviceName': 'BACnet Device ${objectName}', 'deviceType': 'default', 'address': 'IP-ADDR:47808', 'pollPeriod': 10000, 'attributes': [{'key': 'Außentemperatur Kessel 1', 'type': 'double', 'objectId': 'analogInput:239', 'propertyId': 'presentValue'}]}], 'logLevel': 'DEBUG', 'name': 'Bacnet', 'enableRemoteLogging': True, 'id': 'ac5e542d-623b-432a-9a96-04fe82655e34'}}}

tcpdump:

13:57:32.811805 IP iotgw.bacnet > IPADDR.bacnet: UDP, length 8
13:57:32.814702 IP iotgw.bacnet > IPADDR.bacnet: UDP, length 8

Can someone please help me to solve this problem.?
Sorry, I´m not really a bacnet-specialist.

Versions (please complete the following information):

• OS: Rocky Linux 9.4
• Thingsboard IoT Gateway version 3.5.1 (Docker)
• Python version 3.9

[HarvUK]

Try changing this IP address

{
"general": {
"objectName": "tb-gateway",
"address": "0.0.0.0:47808",

To be the IP address of the network interface of your TBGW.

Harv

[mgruenberger21]

Hello,

thank you for your message.
Still there is no answer of the Bacnet-Device.
Looks like something is wrong with the request itself. In Wireshark I can see the request sent to bacnet-device, but nothing is sent back:

Some flags look differnet in yabe-request:

[jurkov]

You could try https://github.com/JoelBender/bacpypes/blob/master/samples/ReadObjectList.py to find all the objects. If you don't get your device, your problem might be related to https://github.com/JoelBender/bacpypes.

[mgruenberger21]

Ok thank you. I just installed bacpypes on my machine and downloaded ReadObjectList.py.
Now the following arguments are required: device_id, device_addr
How, or where can i set this arguments?
device_addr should look like "192.0.0.1:47808" for example?
and what's the device_id?

[mgruenberger21]

Thank you jurkov.
With bacpypes I can access all the data. And sorry for my stupid questions, but I`m not a bacnet-specialist :)
But my Bacnet-Device is only responding to "Confirmed-REQ"-messages:
python samples/ReadObjectList.py --ini BACpypes.ini 2XXXXX5 10.XXX.XXXX.1

When I send "Unconfirmed-REQ who-Is" (as thingsboard-gateway does), I get no answer:

So I need to make thingsboard to send Confirmed-REQ-messages to the bacnet-device?
How can I do this?
How to specify the device-ID for bacnet-device in thingsboard?

[jurkov]

You may have to create a feature request or create the feature by yourself. It is possible to create a custom uplink and downlink converter. See https://thingsboard.io/docs/iot-gateway/custom/

I added my BacNET devices based on https://thingsboard.io/docs/iot-gateway/config/bacnet/ line 12 and line 14.