Sequence Instructions - Mitsubishi MELSEC-A Series Programming Manual

2. INSTRUCTIONS

2.2.2 Sequence instructions

Classi- Instruction
fication Symbol
LD
LDI
AND

Contact
ANI
OR
ORI
Classi- Instruction
fIcation Symbol
ANB
ORB
Connec-

tion MPS
MRD
MPP
(1) Contact instructions
Table 2.3 Contact Instructions
Symbol Contents of Processing
Logical operation start
(NO contact operation start)
Logical NOT operation start
(NC contact operation start)
Logical product
(NO contact series connection)
Logical product NOT
(NC contact series connection)
Logical add
(NO contact parallel connection)
Logical add NOT
(NC contact parallel connection)
(2) Connection instructions
Table 2.4 Connection Instructions
Symbol Contents of Processing
ANDs logical blocks.
(Series connection of blocks)
Ors logical blocks.
(Parallel connection of blocks)
Stores the operation result.
Reads the operation result
from MPS
Reads the operation result from
MPS and clears the result.
*1: For the number of steps when extension devices are used or when index qualification is performed to
bit devices for AnA, A2AS, AnU, QCPU-A (A Mode) and A2USH board, refer to Section 3.8.1.
*2: The mark in the Index column indicates that index qualification can be performed with the AnA,
A2AS, AnU, QCPU-A (A Mode) and A2USH board only.
*3: The mark in the Subset column indicates that subset processing can be performed with the A3H,
A3M, AnA, A2AS, AnU, QCPU-A (A Mode) and A2USH board only.
*1
Execu-
tion Con-
dition
*2
1
*2
1
*2
1
*2
1
*2
1
*2
1
*1
Execu-
tion Con-
dition
1
1
1
1
1
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MELSEC-A
Applicable CPU
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Applicable CPU
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