ASCII serial port instructions Chapter 6
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015 121
ARL reads characters from the buffer (up to and including the termination
characters) and stores them in a string.
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.
ARLInput Input ARDARL Read characters from the buffer (maximum is 82).
See ARDARL data type on page 129.
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.
Destination Output ASCIILOCADDR The string element where you want the characters stored.
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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