Safe data types
The following data types
are used in the safe blocks
.
Each of the following safe data types is a directly →derived data type
. Its base type is an elementary data type according to
"Supported data types (in ST)".
|
Name |
Base type |
|
SAFEBOOL |
BOOL |
|
SAFEBYTE |
BYTE |
|
SAFEDATE |
DATE |
|
SAFEDINT |
DINT |
|
SAFEDT |
DATE_AND_TIME |
|
SAFEDWORD |
DWORD |
|
SAFEINT |
INT |
|
SAFELINT |
LINT |
|
SAFELREAL |
LREAL |
|
SAFELWORD |
LWORD |
|
SAFEREAL |
REAL |
|
SAFESINT |
SINT |
|
SAFETIME |
TIME |
|
SAFETOD |
TIME_OF_DAY |
|
SAFEUDINT |
UDINT |
|
SAFEUINT |
UINT |
|
SAFEULINT |
ULINT |
|
SAFEUSINT |
USINT |
|
SAFEWORD |
WORD |
Observe:
If you connect the input/output of a block for safe logic to one of these safe data types , the background color of this block might be changed to a shade of yellow. Details: See " Highlighting safe logic in the FBD-editor".
Due to the implicit conversion of logi.CAD 3 you do not have to enter additional code in your application, if you want to convert a safe data type to its base type. Example: The safe data type SAFEINT can be converted implicitly to its base type INT.
If you want to convert a base type to the corresponding safe data type, you must call the respective safe convert function in the application. Example: Call the TO_SAFEINT block for a conversion from INT to SAFEINT.