Symbol
[ Class ]
Access to symbol information.
Constructors
Name |
Description |
---|---|
Creates an instance of the symbol. |
Functions
Name |
Description |
---|---|
Reads the value of the symbol. | |
Reads the value of the symbol. | |
Writes the value of the symbol. | |
Monitors the symbol for changes. | |
Returns a list of attributes from the schema of the corresponding symbol. This function can be used to obtain a list of attributes of a PLC symbol. | |
Returns a specific attribute from the schema of the corresponding symbol. This function can be used to obtain a specific attribute of a PLC symbol. | |
Checks if the symbol exists. | |
Resolves the schema of the symbol and returns it using the callback function. | |
Returns the TcHmi.SymbolExpression object associated with the symbol. | |
Destroys the Object symbol. |
Static functions
Name |
Description |
---|---|
Reads the value of a symbol addressed by its name and symbol type. | |
Reads the value of a symbol addressed via the symbol expression. | |
Reads the value of a symbol addressed via the symbol expression. | |
Writes the value of a symbol addressed by its name and symbol type. | |
Writes the value of a symbol addressed via the symbol expression. | |
Returns a list of attributes from the schema of the corresponding symbol. This function can be used to obtain a list of attributes of a PLC symbol. | |
Returns a specific attribute from the schema of the corresponding symbol. This function can be used to obtain a specific attribute of a PLC symbol. | |
Checks if the symbol exists. | |
Resolves the schema of the symbol and returns it using the callback function. | |
Checks whether an expression is a valid symbol expression. |
Interfaces
Name |
Description |
---|---|
Extends TcHmi.IResultObject | |
Extends IReadResultObject | |
Extends TcHmi.IResultObject | |
Extends IWriteResultObject | |
Extends TcHmi.IResultObject | |
Extends IWatchResultObject | |
Extends TcHmi.IResultObject | |
Extends TcHmi.IResultObject | |
Extends TcHmi.IResultObject | |
Extends TcHmi.IResultObject |
![]() | Available from 1.8 |
- constructor
- read
- readEx
- write
- watch
- resolveAttributes
- resolveAttribute
- exists
- resolveSchema
- getExpression
- destroy
- read
- readEx
- readEx2
- write
- writeEx
- resolveAttributes
- resolveAttribute
- exists
- resolveSchema
- isSymbolExpression
- ObjectResolver
- IReadResultObject
- IServerReadResultObject
- IWriteResultObject
- IServerWriteResultObject
- IWatchResultObject
- IServerWatchResultObject
- ISchemaResultObject
- IExistsResultObject
- IAttributesResultObject
- IAttributeResultObject