Statement List (STL) - DCE FEL ČVUT v Praze

Accumulator Instructions
14.6 PUSH CPU with Four ACCUs
Format
Description
Status word
Example
PUSH
PUSH (CPU with four ACCUs) copies the contents of ACCU 3 to ACCU 4, the
contents of ACCU 2 to ACCU 3, and the contents of ACCU 1 to ACCU 2. ACCU 1
remains unchanged. The instruction is executed without regard to, and without
affecting, the status bits.
BR CC 1 CC 0 OV OS OR STA RLO /FC
writes: - - - - - - - - -
STL Explanation
L MW10 //Load the contents of MW10 into ACCU 1.
PUSH //Copy the entire contents of ACCU 1 to ACCU 2, the contents of ACCU 2 to ACCU
3, and the contents of ACCU 3 to ACCU 4.
Contents ACCU 1 ACCU 2 ACCU 3 ACCU 4
before executing PUSH instruction value A value B value C value D
after executing PUSH instruction value A value A value B value C
Statement List (STL) for S7-300 and S7-400 Programming
14-6 A5E00706960-01