
2.4 Instruction Details
3-58
2
Chapter 2 Instructions
AND: And
ANB: And Bar
Connects N.O. contact in series with
previous contact.
Connects N.C. contact in series with
previous contact.
AND
8
ANB
5
nnnn
nnnn
Example
Coding
To turn ON 0503, 0002 must be ON, 0003 OFF, and 0004 ON at the same time. The
AND and ANB instructions are used when two or more conditions (in this case,
0002: ON, 0003: OFF, 0004: ON) must be satisfied at the same time.
Description
• As many contacts as desired can be connected in series provided these contacts
are used in the same program.
• As OUT 0503 shown in the above example, when an AND or ANB instruction is
used immediately after an OUT instruction to connect the other relay via a
contact (0004 in the example), the AND or ANB can be used as many times as
desired, provided the program syntax is correct.
• The following two circuits operate in the same manner, but the coding for these
circuits are different.
Coding Coding
0000
0500
0002
0001
0004
0003
0501
0502
0503
Line No. Instruction Operand
0000 LD 0000
0001 AND 0001
0002 OUT 0500
0003 LD 0002
0004 ANB 0003
0005 OUT 0501
0006 OUT 0502
0007 AND 0004
0008 OUT 0503
0000 0001
0501
0500
Line No. Instruction Operand
0000 LD 0000
0001 OUT 0500
0002 AND 0001
0003 OUT 0501
Line No. Instruction Operand
0000 LD 0000
0001 MPS
0002 AND 0001
0003 OUT 0501
0004 MPP
0005 OUT 0500
0000 0001
0501
0500
:
:
AND / ANB
➮
"MPS instruction" (p. 3-103)
➮
"MPP instruction" (p. 3-103)
KVNKA Chap 02_4aP.p65 08.3.11, 11:57 AM58
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