Ladder Block Series Connection And Parallel Connection: Anb, Orb - Mitsubishi Electric MELSEC Q Series Programming Manual

5 SEQUENCE INSTRUCTIONS FOR MOTION CPU

5.3.2 Ladder block series connection and parallel connection: ANB, ORB

Setting
data
X Y M
―
[Function]
Bit device
SM F T C D
ANB
[Instruction]
ANB
A block
A block
ORB
(1) Ladder block series connection (ANB)
• Performs an AND operation on block A and block B, and takes the resulting
value as the operation result.
• The symbol for ANB is not the contact symbol, but rather is the connection
symbol.
• Up to 7 ANB instructions (8 blocks) can be written consecutively.
If consecutive instructions are 8 or higher, The Motion CPU will not be capable
of performing correct operations.
(2) Ladder block parallel connection (ORB)
• Conducts an OR operation on Block A and Block B, and takes the resulting
value as the operation result.
• ORB is used to perform parallel connections for ladder blocks with two or more
contacts.
For ladder blocks with only one contact, use OR or ORI; there is no need for
ORB in such cases.
• The ORB symbol is not the contact symbol, but rather is the connection symbol.
• Up to 7 ORB instructions (8 blocks) can be written consecutively.
If consecutive instructions are 8 or higher, The Motion CPU will not be capable
of performing correct operations.
Usable device
Word device
W T C SD Z
B block
ORB
B block
OR or ORI is used for
the one contact
parallel connection.
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Constant Pointer Level
K H P N
Digit
desig- Index
nation
: Usable