Limitations
It is recommended that you read the following before you start using any models, products, devices, logical assets, asset trees, firmware upgrades, etc. The limitations listed here are applicable to each OU(Organization Unit).
The limitations listed in this document are default limitations. You can contact the OU administrator to expand the limitations as needed. The effect range of the expansion can be divided into the following:
- This environment: the expanded limitations will be effective in each OU of this environment.
- This OU: the expanded limitations will be effective in this OU only.
General
The following general limitations apply simultaneously to models, attributes, measurement points, services, events, products, devices, logical assets, firmware, and asset trees. For example, if the number of tags that can be added to a single model is extended, the number of tags that can be added to the other objects mentioned above will also be extended within the effect range.
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max number of tags for each model/attribute/measurement point/service/event/product/device/logical asset/firmware/asset tree |
100 |
This environment |
| Tag key |
- Supports only letters, numbers, underscore (_), hyphen (-), and slash (/)
- Max 50 characters
|
This environment |
| Tag value |
- Does not support starting or ending with whitespace
- Max 200 characters
|
This environment |
Connectivity
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max number of MQTT connections per second per device |
1 |
This environment |
| Max MQTT report limit per second per device |
1M |
This environment |
| Max MQTT downlink reception limit per second per device |
1M |
This environment |
| Max length of one MQTT publish message |
512KB |
This environment |
| Time range of MQTT heartbeat |
60 - 300 seconds |
This environment |
| Max number of CoAP connections per second per device |
1 |
This environment |
| Max CoAP report limit per second per device |
10KB |
This environment |
| Max CoAP downlink reception limit per second per device |
10KB |
This environment |
| Max length of one CoAP publish message |
1KB |
This environment |
| Max length of HTTP report body |
512KB |
This environment |
| Max number of connection requests for a device when the device request connection is not limited |
4 times within 2 minutes, limited to 5 minutes |
This environment |
Models
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max number of private models |
1,000 |
This OU |
| Max number of attributes for each model |
200 |
This environment |
| Max number of measurement points for each model |
5,000 |
This environment |
| Max number of services for each model |
50 |
This environment |
| Max number of events for each model |
50 |
This environment |
| Max number of files in the ZIP when importing models |
20 |
This environment |
| Max ZIP file size when importing models |
2M |
This environment |
| Max number of models that can be exported |
20 |
This environment |
| Max number of items for enum data type |
200 |
This environment |
| Max number of items for array data type |
1,024 |
This environment |
| Model identifier |
- 1 - 64 characters
- Supports only English alphabets, numbers, and special characters -_.
|
This environment |
| Model name |
- 1 - 64 characters
- Does not support <>;@*%&\
|
This environment |
| Model category |
- Max 64 characters
- Does not support <>;@*%&\
|
This environment |
| Model description |
Max 1,024 characters |
This environment |
| Attribute/measurement point/service/event identifier |
- 1 - 64 characters
- Supports only English alphabets, numbers, and special characters -_.
|
This environment |
| Attribute/measurement point/service/event name |
1 - 64 characters |
This environment |
| Attribute/measurement point/service/event description |
Max 1,024 characters |
This environment |
| String data type for attribute |
Max 4,000 characters |
This environment |
| String data type for measurement point |
Max 1,024 characters |
This environment |
Products
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max number of products |
2,000 |
This OU |
| Max number of devices that can be created under one product |
10,000 |
This environment |
| Max number of products that can be batch imported at any one time |
1000 |
This environment |
| Max file size when importing products |
5M |
This environment |
| Max number of products that can be exported |
1,000 |
This environment |
| Max size of script for data parsing |
48KB |
This environment |
| Product name |
- 1 - 64 characters
- Does not support <>;@*%&\
|
This environment |
| Product description |
Max 512 characters |
This environment |
Devices
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max number of assets |
200,000 |
This OU |
| Max number of device assets |
100,000 |
This OU |
| Max number of devices that can be created in a batch |
1,000 |
This environment |
| Max file size for each Excel file when importing devices |
3M |
This environment |
| Max ZIP file size when importing devices |
10M |
This environment |
| Max number of devices that can be exported |
1,000 |
This environment |
| Max number of sub-devices that can be added under a gateway device |
10,000 |
This environment |
| Max number of cache commands supported per device |
50 |
This environment |
| Storage duration for a history service invoked per device |
15 days |
This environment |
| Storage duration for events reported per device |
15 days |
This environment |
| Storage duration for the behavior log for one device |
15 days |
This environment |
| Storage duration for cloud logs |
8 days |
This environment |
| Storage duration for device logs |
8 days |
This environment |
| Cloud log throttling period* |
1 minute |
This environment |
| Max number of cloud logs for all devices under this OU within the throttling period |
100,000 |
This environment |
| Max number of cloud logs for all devices under the same product within the throttling period |
1,000 |
This environment |
| Max number of cloud logs for a single device within the throttling period |
100 |
This environment |
| Max storage size for device files |
0.1T (modifiable in Resource Management) |
This OU |
| Device key |
- 4 - 64 characters
- Supports only English alphabets, numbers, and special characters -_.
|
This environment |
| Device name |
- 1 - 64 characters
- Does not support <>;@*%&\
|
This environment |
| Device description |
Max 512 characters |
This environment |
- If the number of logs exceeds the limit during the throttling period, logging will be stopped. At the start of the next period, the log count will be reset, and logging will resume.
Logical Assets
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max file size for each Excel file when importing logical assets |
3M |
This environment |
| Max ZIP file size when importing logical assets |
10M |
This environment |
| Max number of logical assets that can be exported |
10,000 |
This environment |
| Logical asset name |
- 1 - 64 characters
- Does not support <>;@*%&\
|
This environment |
| Logical asset description |
Max 512 characters |
This environment |
Device Simulators
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max number of simulated devices |
300 |
This OU |
| Max time range that can be simulated by the device simulator |
90 days |
This environment |
| Max device simulator sample file size |
50M |
This environment |
| Device simulator file name |
Supports English alphabets and numbers |
This environment |
Firmware Upgrades
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max number of firmware |
256 |
This OU |
| Max number of OTA tasks that can be opened at the same time |
256 |
This environment |
| Max number of devices that can be upgraded per batch upgrade |
100,000 |
This environment |
| Max firmware file size |
100M |
This environment |
| Supported firmware signature algorithm |
MD5 and SHA256 |
This environment |
| Firmware name |
- 1 - 64 characters
- Does not support <>;@*%&\
|
This environment |
| Firmware version |
- 1 - 128 characters
- Supports English alphabets, numbers, and special characters ._
|
This environment |
| Firmware description |
Max 512 characters |
This environment |
| OTA job name |
- 1 - 64 characters
- Does not support <>;@*%&\
|
This environment |
| OTA job maximum task concurrency |
Max 100,000, default 300 |
This environment |
| OTA job upgrade timeout |
5 to 2,880 minutes, default 120 minutes |
This environment |
Asset Trees
| Item |
Limit |
Effect Range of Expansion |
|---|
| Max number of asset trees |
100 |
This OU |
| Max layers that an asset tree can have |
7 |
This environment |
| Max number of individual assets that can be added in the same tree |
1 |
This environment |
| Max ZIP file size when importing asset trees |
5M |
This environment |
| Max number of asset trees that can be batch imported at any one time |
50 |
This environment |
| Max number of asset nodes that can be batch imported for an asset tree at any one time |
50,000 |
This environment |
| Max number of asset trees that can be exported |
50 |
This environment |
| Max file size when exporting asset trees |
5M |
This environment |
| Max number of sub-nodes that can be added to a single asset node |
10,000 |
This environment |
| Max number of assets that can be associated at any one time |
1,000 |
This environment |
| Max number of assets that can be removed at any one time |
20,000 |
This environment |
| Asset tree name |
- 1 - 64 characters
- Does not support <>;@*%&\
|
This environment |