9
DEVICE EXPLANATION
9.6 Index Register (Z)
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9
Device Explanation
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CPU Module Processing
Time
11
Procedure for Writing
Program to CPU Module
AppendicesIndex
(b) When index register is used for 32-bit instruction
If the index registers are used for 32-bit instructions, the data is stored in registers
Zn and Zn +1.
The lower 16 bits of data are stored in the index register No. (Zn) designated in
the sequence program, and the upper 16 bits of data are stored in the designated
index register No. + 1.
For example, if register Z2 is designated in the DMOV instruction, the lower 16
bits are stored in Z2, and the upper 16 bits are stored at Z3.
Remark
Refer to the following manual for indexing using the index register.
QCPU (Q Mode)/QnACPU Programming Manual (Common Instructions)
Diagram 9.58 Data transfer by 32-bit instruction and storage destination
D0
Z2
DMOV
Z3
Z2
Processing object: Z2, Z3
Upper 16 bits Lower 16 bits
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