Mitsubishi MELSEC QCPU User Manual

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MELSEC-Q/QnA
3 CONFIGURATION OF INSTRUCTIONS
3.4 Indirect Designation
(1) Indirect Designation
(a) Indirect designation is a way of using a word device to designate a device address that will
be used in a sequence program.
This method can be used when the index register is insufficient.
(b) The device which designates the designated device address is designated by
"@+(word device number)".
For example, designation of @D100 will make the contents of D100 D101 the device
address.
(c) The address of the device performing indirect designation can be confirmed with the
ADRSET instruction.
MOV K1234 @D100
ADRSET W100 D100
D0
D1
W100D100
addressD101
1234W100
W100 address is stored at D101 and D100
Reads the contents of
D100
Device area
The value 1234 is
written to the designation
address by D101 and D10
0
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Mitsubishi MELSEC QCPU Specifications

General

Brand	Mitsubishi
Model	MELSEC QCPU
Category	Controller
Language	English