Anb - Mitsubishi Electric MELSEC FX3U Programming Manual

Melsec fx series programmable logic controllers
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FX
/FX
/FX
Series Programmable Controllers
3G
3U
3UC
Programming Manual - Basic & Applied Instruction Edition
7.7

ANB

Outline
Use ANB instruction to connect a branch circuit (parallel circuit block) to the preceding circuit in series.
Use LD or LDI instruction at the start of branch. After completing a parallel circuit block, connect the parallel
circuit block to the preceding circuit in series by ANB instruction.
When there are many parallel circuits, ANB instruction can be used in each circuit block to connect them.
1. Instruction format
ANB
AND Block
2. Applicable devices
Bit Devices
Instruc-
System User
tion
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
ANB
Explanation of function and operation
1. ANB instruction (serial connection of multiple parallel circuits)
Circuit program
ANB
X000
X002
X001
X004
X006
Parallel block
X003
OR instruction before ANB instruction
OR instruction after ANB instruction
Caution
There is no limitation in the number of ANB instruction.
Though ANB instructions can be used at one time, note that the repeated use of LD or LDI instruction is
limited to 8 or less in the same way as ORB instruction.
Mnemonic
Operation Condition
Basic Instruction
ANB
1 step
Digit Specification
There are no applicable devices.
LD
X003
Y007
X005
ORB
Continuous
Operation
Pulse (Single)
Operation
Word Devices
Special
System User
Index
Unit
V Z Modify K H
List program
0000 LD
X000
0001 OR
X001
0002 LD
X002
0003 AND X003
0004 LDI
X004
0005 AND X005
0006 ORB
0007 OR
X006
0008
ANB
0009 OR
X003
0010 OUT Y007
7 Basic Instruction
7.7 ANB
Others
Con-
Real
Charac-
stant
Number
ter String
E
" "
Branch start point
Parallel block is completed.
It is connected to the
preceding circuit in series.
1
2
3
4
Pointer
P
5
6
7
8
9
10
207

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