Sequence Instructions; Contact Instructions - Mitsubishi MELSEC-Q Series Programming Manual

2.3

Sequence Instructions

2.3.1

Contact instructions

Category Instruction name
−
−
−
−
−
Contact
−
LDP
LDF
ANDP
ANDF
ORP
ORF
*1 : Symbols used in structured ladder.
Table 2.3 Contact instructions
Argument
*1
*1
*1
*1
*1
*1
s
s
s
s
s
s
Processing details
• Starts a logical operation.
(Starts a logical operation with normally open
contact)
• Starts a logical NOT operation.
(Starts a logical operation with normally closed
contact)
• Performs a logical AND operation (Normally
open contact series connection)
• Performs a negative AND operation (Normally
closed contact series connection)
• Performs a logical OR operation (Normally
open contact parallel connection)
• Performs a negative OR operation (Normally
closed contact parallel connection)
• Starts a rising pulse operation
• Starts a falling pulse operation
• Rising pulse series connection
• Falling pulse series connection
• Rising pulse parallel connection
• Falling pulse parallel connection

2.3 Sequence Instructions

2.3.1 Contact instructions
2
Executing
Page
condition
5-2
5-4
2-5