Table of Contents
Driver Amit DB-Net/IP
Description
- Amit DB-Net/IP protocol implementation
- Automatic import of db.ini and hw.ini files
- Automatic import of aliases.csv files (unpacking WIDs to binary Bacnet objects)
- Reading arrays as individual Bacnet objects
- Optimized array reading
- Mathematical functions
- Ability to define WID as manual sign “outofservice” for other WID/Bacnet point
- Option to select type of Bacnet object for WID
- Description from WID (db.ini) will be automatically imported to Bacnet object
- Unlimmited number of Amit devices
Bacnet implementation
| DB-Net/IP | Bacnet |
|---|---|
| Simple variable | AnalogInput |
| Simple variable | AnalogOutput |
| Simple variable | AnalogValue |
| Simple variable | BinaryInput |
| Simple variable | BinaryOutput |
| Simple variable | BinaryValue |
| Array | AnalogInput |
| Array | AnalogOutput |
| Array | AnalogValue |
| Array | BinaryInput |
| Array | BinaryOutput |
| Array | BinaryValue |
| Alias | BinaryInput |
| Timestamp | AnalogInput |
| Continuous reading | BinaryValue |
Properties:
- objectName
- objectType
- presentValue
- statusFlags
- outOfService
- covIncrement
- priorityArray
- relinquishDefault
DB-Net/IP implementation
Timestamp
Value can be reversed as [long timeMs = hodnota * 1000000], time in ms from Unix Epoch e.g. starting 1.1.1970 UTC. Bacnet representation is readonly.
Simple variables
Generated Bacnet objects are read/write enabled.
Arrays
Driver optimize arrays reading. With DB-Net/IP it is possible to read only limited number of array elements in one step.
On export to Bacnet, arrays are split to individual objects and their name contains suffix _col_row. Index order is inverse to order of DB-Net protocol. That means if we have array of size [1×5], last Bacnet point will have suffix _4_0. Generated Bacnet objects are read/write enabled.
Alias extraction
Variables of type int or long can be automatically extracted to binary aliases on Bacnet. Objects of individual bits are generated as binaryInputs and they are readonly.
Driver settings
Devices editor
On top of the screen is located list of currently configured devices.
| Button | Description |
|---|---|
 | Add new device |
 | Remove selected devices |
 | Save configuration.  Warning! This button saves changes permanently to file. Other buttons on this page are saving changes to configuration in memory. Do not forget to press this button when you are done! |
 | Undo |
 | Restart driver and apply saved settings |
Device editor
| IP address | IP address of Amit device |
| Port | UDP port of Amit device |
| Station number | Number of DB-Net station |
| Password | Password to DB-Net |
| Local station number | Number of Local DB-Net station |
| Bacnet points prefix | Prefix used for Bacnet points name |
| Description | Users description |
| Timestamp point name | Name of timestamp point in Bacnet |
| Enabled | Start driver and export points to Bacnet |
| Enable delay between point readings | Enables delay between individual readings of points |
| Continuous reading point name | Name of Bacnet point used for enabling continuous reading |
| Delay between poolings [s] | Duration of delay between individual readings of points in seconds |
| Cancelation of continuous reading after [s] | Continuous reading will be disabled after specified time has elapsed. |
| Number of telegram sending retries | Maximum number of attempts to send telegram when error occurs. |
| Timeout[ms] | Waiting duration for reply fomr Amit |
| DB file (db.ini) | Uploads file DB.ini |
| HW file (hw.ini) | Uploads file HW.ini |
| Alias file (aliases.csv) | Uploads file aliases.csv |
| Update reference | On DB.ini reload updates point parameters with given name or with WID. |
| Save changes |
| Undo |
Points list editor
| Button | Description |
|---|---|
| Add point |
| Remove selected points |
| Save changes |
| Undo |
Point settings
| Point name | Name of point in Bacnet |
| Type | Variable/Array |
| WID | WID number |
| Value type | int/long/float |
| Lines number | Number of array lines |
| Rows number | Number of array rows |
| Description | Bacnet property description |
| Bacnet object | Type of Bacnet object |
| Mat. function | Type of mathematical function |
| Value | Input value of mathematical function |
| Manual point | Assigned point aut/man, as Bacnet property outOfService |
| Save changes |
| Undo |
Editor aliasov
Imported alias names. Alias names are readonly. Name of Bacnet points is generated as mainPoint_alias
LOG
Here are displayed read and write errors of DB-Net/IP communication.
