FUNCTION_BLOCK TCP_Write EXTENDS CBM.ETrigTo
This function block serves to write data to the previously established connection given in hConnection. The content of the memory area indicated by pointer pData contains the data to be written. szSize defines the number of bytes to be written. When xDone is set to TRUE the data was written successfully.
The time out value has no effect at this function block.
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InOut:
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Scope
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Name
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Type
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Comment
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Inherited from
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Input
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xExecute
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BOOL
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Rising edge: Action starts
Falling edge: Resets outputs
If a falling edge occurs before the function block has completed its action, the outputs operate in the usual manner and are only reset if either the action is completed or in the event of an error. In this case, the corresponding output values (xDone, xError) are present at the outputs for exactly one cycle.
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ETrigTo
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udiTimeOut
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UDINT
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Defines the time (µs) after which an FB (e.g. requiring an external acknowledgement) aborts operation due to a timeout with error message.
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ETrigTo
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Output
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xDone
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BOOL
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TRUE: Action successfully completed
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ETrigTo
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xBusy
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BOOL
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TRUE: Function block active
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ETrigTo
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xError
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BOOL
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TRUE: Error occurred, function block aborts action
FALSE: No error
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ETrigTo
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Input
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hConnection
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CAA.HANDLE
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szSize
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CAA.SIZE
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pData
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CAA.PVOID
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Output
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eError
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ERROR
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