Statement List (STL) - DCE FEL ČVUT v Praze

Examples
Shift and Rotate Instructions
Contents ACCU1-H ACCU1-L
Bit 31 . . . . . . . . . . 16 15 . . . . . . . . . . 0
before execution of SRD 7 0101 1111 0110 0100 0101 1101 0011 1011
after execution of SRD 7 0000 0000 1011 1110 1100 1000 1011 1010
Example 1
STL Explanation
L MD4 //Load value into ACCU 1.
SRD 7 //Shift bits in ACCU 1 seven places to the right.
T MD8 //Transfer result to MD8.
Example 2
STL Explanation
L +3 //Load value +3 into ACCU 1.
L MD20 //Load contents of ACCU 1 into ACCU 2. Load value of MD20 into ACCU 1.
SRD //Shift number is value of ACCU 2- L- L => Shift bits in ACCU 1 three places
to the right.
JP NEXT //Jump to NEXT jump label if the bit shifted out last (CC 1) =1.
Statement List (STL) for S7-300 and S7-400 Programming
A5E00706960-01 11-13