Sequence Instructions - Mitsubishi MELSEC Q Series Programming Manual

2.3

Sequence Instructions

2.3.1
Contact instructions
Category
LD
LDI
AND
ANI
OR
ORI
LDP
LDF
ANDP
Contact
ANDF
ORP
ORF
LDPI
LDFI
ANDPI
ANDFI
ORPI
ORFI
2-6
Symbol
*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
Table 2.3 Contact Instructions
Processing Details
• 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
• Starts leading edge pulse NOT operation
• Starts trailing edge pulse NOT operation
• Leading edge pulse NOT series connection
• Trailing edge pulse NOT series connection
• Leading edge pulse NOT parallel connection
• Trailing edge pulse NOT parallel connection
Device
Execution
Condition
5-2
*1
5-5
*1
*2
3
*2
3
*2
4
5-7
*2
4
*2
4
*2
4
Number of Steps
1
2
3