Sequence Instructions; Contact Instruction - Mitsubishi MELSEC QCPU Programming Manual

2 INSTRUCTION TABLES

2.3 Sequence Instructions

2.3.1 Contact Instruction

Category
LD
LDI
AND
ANI
OR
ORI
Contact
LDP
LDF
ANDP
ANDF
ORP
ORF
REMARKS
1) 1 : The number of steps may vary depending on the device being used.
Internal device, file register (R0 to R32767)
Direct access input (DX)
Devices other than above
2) 2 : The number of steps may vary depending on the device and type of CPU module being
used.
Internal device, file register (R0 to R32767)
Direct access input (DX)
Devices other than above
3) 3: The subset is effective only with QCPU.
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Table 2.3 Contact Instructions
Symbol
• Starts logic operation
(Starts a contact logic operation)
• Starts logical NOT operation
(Starts b contact logic operation)
• Logical product
(a contact series connection)
• Logical product NOT
(b contact series connection)
• Logical sum
(a contact parallel connection)
• Logical sum NOT
(b contact parallel connection)
• Starts leading edge pulse operation
• Starts trailing edge pulse operation
• Leading edge pulse series connection
• Trailing edge pulse series connection
• Leading edge pulse parallel connection
• Trailing edge pulse parallel connection
Device
Device
Processing Details
MELSEC-Q/QnA
Execution
Condition
1 5-2
3
2 5-5
3
Number of Steps
1
2
3
Number of Steps
QCPU QnACPU
1 2
2 2
3 3
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