Statement List (STL) - DCE FEL ČVUT v Praze

Conversion Instructions
3.13 CAW Change Byte Sequence in ACCU 1-L (16-Bit)
Format
Description
Status word
Example
CAW
CAW reverses the sequence of bytes in ACCU 1-L. The result is stored in the low
word of accumulator 1. The high word of accumulator 1 and accumulator 2 remain
unchanged.
BR CC 1 CC 0 OV OS OR STA RLO /FC
writes: - - - - - - - - -
STL Explanation
L MW10 //Load the value of MW10 into ACCU 1.
CAW //Reverse the sequence of bytes in ACCU 1-L.
T MW20 //Transfer the result to MW20.
Contents ACCU1-H-H ACCU1-H-L ACCU1-L-H ACCU1-L-L
before execution of CAW value A value B value C value D
after execution of CAW value A value B value D value C
Statement List (STL) for S7-300 and S7-400 Programming
A5E00706960-01 3-13