Lenze DDS v2.3 Manual de usuario descargar pdf (Pagina 138)

Drive PLC Developer Studio

Editors

7-16

DDS EN 2.3

7.2.14 Short mode

The declaration editor provides the possibility to use the short form mode.

• The short form mode is activated by completing a line with <Ctrl>+<Enter>.

The following short forms are supported:

• All identifiers except the last one in a line become variable identifiers in the declaration.

• The declaration type is determined by the last identifier in the line, where:

or BOOL is BOOL

or INT is INT

or REAL is REAL

or STRING is STRING

• If these rules did not help to define a type, the type will be BOOL and the last identifier is not

used as a type ().

• Each constant becomes an initialization or a string length depending on the declaration type

(, ).

• An address (as in %MD12) is extended by the AT attribute ().

• A text behind a semicolon (;) becomes a comment ().

• All other characters in the line are ignored (such as the exclamation mark in in ,for

example).

Examples:

Short form Declaration

 A

A: BOOL;

 ABI 2

A, B: INT := 2;

 ST S 2; String

ST: STRING(2); (* String *)

 X%MD12R 5; Number

X AT %MD12:REAL := 5.0; (* Number *)

 B!

B: BOOL;

7.2.15 Auto declaration

If the option Auto declaration in the dialog box

Option

, category

Editor

is activated, the following

dialog box will appear in all editors on entry of a not-yet-declared variable.

• Use combination box Class to select the variable class.

• Enter the variable name in text field Name (the input field is pre-assigned with the variable

name entered in the editor).

• Enter the variable type in text field Type (the input field is pre-assigned with type BOOL).

• Use the button ... to call the Help Manager for a selection of all available types.

• Use text field Initial value to assign a value to the variable, otherwise the standard initial

value will be used.

• Use check boxes CONSTANT (constant) and RETAIN (battery support) to define whether the

quantity is a constant or a retentive Retain variable.

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