Acb - Allen-Bradley Micro800 General Instructions Manual

Chapter 6
ASCII serial port instructions

ACB

Parameter Parameter type
IN Input
ACBInput Input
Q Output
Characters Output
Error Output
ErrorID Output
112
ACB determines the total characters in the buffer.
Arguments
Data type Description
BOOL If Rising Edge (IN turns from FALSE to TRUE), start the function block with the precondition that the
last operation has been completed.
ABLACB The channel to be operated.
See ABLACB data type
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.
UINT The number of characters.
BOOL FALSE - No error.
TRUE - An error is detected.
UINT See ABL error codes
ACB function block language examples
Function Block Diagram (FBD)
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
on page 127.
on page 127.