Configuration Dialog Box (Device Definition)
Device definition - configuration dialog box
Editing of all objects in the process D2000 CNF is being performed in the configuration dialog box, a specific part of which is common for all editable objects and another part depends on the type of edited object.
The configuration dialog box of objects of the Device definition type consists of several parts (tabs), which contain similar parameters.
General properties
Description
A text string describing the structure definition. Maximum: 128 characters.
Possibility to use the Dictionary (to open press CTRL+L).
Structure
Individual items (columns) of the structure are defined in the list, where each row of the list corresponds to one item of the structure and displays all configuration parameters.
To modify the number of items in the list use the following buttons:
 | - inserts a row above the current one |
| - adds a row to the end (last one) |
| - deletes current row |
| - inserts a copy of the current row above the current row |
| - adds a copy of the current row to the end (last one) |
During the editing of a used device definition, it is not possible to decrease the number of columns.
To edit individual configuration parameters, press the left mouse button above the corresponding parameter. According to the type of parameter, a value is entered by either typing into the input field or by selecting from the list.
When creating a device definition, it is possible to change the type of device definition with the button :
A Structured Device Definition allows you to edit multiple lines that correspond to device items.
The Array Device Definition defines an array composed from objects of the Device type - a single line is edited, the Value type is Device and it is necessary to enter the parameters Device type and possibly Mandatory. Other parameters (Start value, Limits, Hysteresis, Status text, Index to transformation palette) are not used.
Name
A unique string of characters within the frame of objects, which meets restrictions for object name in the system.
In addition, there must be no level separator in the name (see the naming convention of the devices) - by default, it is a dot, alternatively, it can be an underline.
Name is used in references to an item.
Warning: Name can consist of a maximum of 32 characters, capital letters and small letters are not distinguished (e.g. a column name "Hello" and "hello" are the same).
Description
Arbitrary text string. Maximum: 50 characters.
Value type
The possible value types:
Value type | The entry of start value and its interpretation |
|---|---|
Logical | T* - True (word beginning with the character 'T'), otherwise False. |
Integer | Integer number |
Real | Real number |
Absolute time | Time in the form of HH:MI:SS DD-MM-YYYY. |
Relative time | Time in the form DDD HH:MI:SS.MSS. |
Text | Text |
Object | Name of an existing object in the system. |
Device | Another object of Device type (it is necessary to specify the Device definition for it) |
Internal item | The name of an existing object in the system that is part of the Device. |
The types from Logic up to Text are common value types and determine the value type of the corresponding column for objects of Structured variable and Database types. The Object type represents either a reference to an object, a structured variable item, a device item, or a value array item. Basically, it is a reference to another object of the D2000 system. Item of a structure, which includes the reference to an object, essentially copies a value of the given object. The Device and Internal Item types represent references to another D2000 object that is understood as part of the device. A naming convention is applied to it, and such an object can only be connected to one Device type object (unlike the Object type, where an object can be connected to multiple Devices and its name does not change).
Start value **
Text parameter, which determines the start value of the item after the system start. Start value is expressed by a text and is converted to a corresponding type during the system start. Unsuccessful conversion is expressed by invalid value.
For example, if the column type is Integer and the Start value is "4", the value of the corresponding item of objects of Device type will be 4 (unless the attribute is redefined) after the system start.
For the value type Object, Device, and Internal item, the attribute Start value defines the object name, to which the item will refer. Reference to object means, that the corresponding item copies the object value.
Note: The parameter can be disabled*.
Limits and hysteresis **
Limits (VHL, HL, LL, VLL) for setting the limit attributes and hysteresis.