Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 524

(c) Program after replacement
• Replace the IX instruction with the ZPUSH instruction and the processing for setting the contents of index
modification table to index registers.
• Replace the IXEND instruction with the ZPOP instruction.
522
Current index register is
saved.
Transition
from the IX
Contents of the index
instruction
modification table are
set to the index
registers Z0 to Z15.
Modification target
(No change required)
The saved index register is restored.
(Transition from the IXEND instruction)