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Mitsubishi Electric Artisan MELSEC-Q Series Manual Page 142

General-purpose programmable controllers, large/small.
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(1) Representations of dedicated instruction
The QCPU unifies AnACPU/AnUCPU dedicated instructions- LEDA, LEDB, LEDC, SUB, and LEDR- into one
single instruction, which has the same format as the basic and application instructions.
Instructions that do not have a corresponding QCPU instruction are replaced with "OUT SM1255". Replace or
delete the instructions that have been converted to "OUT SM1255".
Command
Instruction name
(2) Dedicated instructions with changed instruction names
In AnACPU/AnUCPU, dedicated instructions share the same name as basic and application instructions.
In QCPU, instruction names have been changed.
Function
Floating decimal point addition
Floating decimal point subtraction
Floating decimal point multiplication
Floating decimal point division
Data dissociation
Data linking
Changing check pattern
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QCPU
S D
n
E+
E-
E*
E/
NDIS
NUNI
CHKCIR, CHKEND
139
7.2 Replace AnACPU/AnUCPU dedicated instructions
AnACPU/AnUCPU
Command
LEDA(B)
LEDC/SUB
LEDC/SUB
LEDC/SUB
S, D, n indicate the data used in the instructions.
QCPU
ADD
SUB
MUL
DIV
DIS
UNI
CHK, CHKEND
Instruction name
S
D
n
LEDR
AnACPU/AnUCPU

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