Chapter 5 Sequence Instructions; Contact Instructions; Operation Start, Series Connection, Parallel Connection - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

5
SEQUENCE INSTRUCTIONS
5.1

Contact Instructions

Operation start, series connection, parallel connection

LD, LDI, AND, ANI, OR, ORI
RnPCPU
RnCPU RnENCPU
(Process)
• LD: Normally open contact operation start, LDI: Normally closed contact operation start
These instructions output the on/off information of the specified device as the operation result.
• AND: Normally open contact series connection, ANI: Normally closed contact series connection
These instructions perform an AND operation between the on/off information of the specified device and the previous
operation result, and output the operation result.
• OR: Single normally open contact parallel connection, ORI: Single normally closed contact parallel connection
These instructions perform an OR operation between the on/off information of the specified device and the previous operation
result, and output the operation result.
Ladder
(s)
LD
(s)
LDI
AND
ANI
OR
(s)
ORI (s)
FBD/LD
Not supported
■Execution condition
Instruction
LD
LDI
AND
ANI
OR
ORI
5 SEQUENCE INSTRUCTIONS
160
5.1 Contact Instructions
RnPCPU RnSFCPU RnSFCPU
(Redundant) (Standard) (Safety)
(s)
(s)
Execution condition
Every scan
ST
Not supported