Association Instructions; Ladder Block Series/Parallel Connection - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

5.2

Association Instructions

Ladder block series/parallel connection

ANB, ORB
RnPCPU
RnCPU RnENCPU
(Process)
• ANB: Ladder block series connection
This instruction performs an AND operation between block A and block B.
• ORB: Ladder block parallel connection
This instruction performs an OR operation between block A and block B.
Ladder
A
ANB
ORB
A: A block
B: B block
FBD/LD
Not supported
■Execution condition
Instruction
ANB
ORB
Processing details
■ANB
• This instruction performs an AND operation between block A and block B, and outputs the operation result.
• The symbol of the ANB instruction is not a contact but a connection.
■ORB
• This instruction performs an OR operation between block A and block B, and outputs the operation result.
• Ladder blocks, each having two or more contacts, are connected in parallel. Use the OR or ORI instruction for connection
of blocks, each having only one contact. The ORB instruction is not required in this case.
• The symbol of the ORB instruction is not a contact but a connection.
Operation error
There is no operation error.
5 SEQUENCE INSTRUCTIONS
168
5.2 Association Instructions
RnPCPU RnSFCPU RnSFCPU
(Redundant) (Standard) (Safety)
B
A
B
Execution condition
Every scan
ST
Not supported