ASCII serial port instructions Chapter 6
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015 123
AWA writes characters from a source string to an external device. This instruction
adds the two appended characters that you configure on the configuration dialog
box.
Arguments
Parameter
Parameter
type
Data type Description
IN Input BOOL If Rising Edge (IN turns from FALSE to TRUE), start the function block with the
precondition that the last operation has been completed.
AWAInput Input AWAAWT The channel and length to be operated.
See AWAAWT data type on page 130.
Source Input ASCIILOCADDR The source string: char array.
Q Output BOOL Outputs of this instruction are updated asynchronously from the program scan. Output Q
cannot be used to re-trigger the instruction since IN is edge triggered.
FALSE - The function block is not done.
TRUE - The function block is done.
NumChar Output UINT The number of characters.
Error Output BOOL FALSE - No error.
TRUE - An error is detected.
ErrorID Output UINT See ABL error codes on page 127.
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