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blocks a and b would be combined using AND LOAD as shown above, and
then block c would be coded and a second AND LOAD would be used to
combined it with the execution condition from the first AND LOAD. Then
block d would be coded, a third AND LOAD would be used to combine the
execution condition from block d with the execution condition from the sec-
ond AND LOAD, and so on through to block n.
Block
a
Block
b
00500
Block
n
Block
c
The following diagram requires an OR LOAD followed by an AND LOAD to
code the top of the three blocks, and then two more OR LOADs to complete
the mnemonic code.
00002
00003
LR 0000
00000
00001
00004
00005
00006
00007
Address
Instruction
Operands
00000
LD
00000
00001
LD
00001
00002
LD
00002
00003
AND NOT
00003
00004
OR LD
--
00005
AND LD
--
00006
LD NOT
00004
00007
AND
00005
00008
OR LD
--
00009
LD NOT
00006
00010
AND
00007
00011
OR LD
--
00012
OUT
LR
0000
Although the program will execute as written, this diagram could be drawn as
shown below to eliminate the need for the first OR LOAD and the AND
LOAD, simplifying the program and saving memory space.
00002
00003
LR 0000
00001
00000
00004
00005
00006
00007
Address
Instruction
Operands
00000
LD
00002
00001
AND NOT
00003
00002
OR
00001
00003
AND
00000
00004
LD NOT
00004
00005
AND
00005
00006
OR LD
--
00007
LD NOT
00006
00008
AND
00007
00009
OR LD
--
00010
OUT
LR
0000
The following diagram requires five blocks, which here are coded in order
before using OR LOAD and AND LOAD to combine them starting from the
Basic Ladder Diagrams
Section 4-3
Summary of Contents for SYSMAC C200H
Page 1: ...OPERATION MANUAL C200H CPU01 E 03 E 11 E SYSMAC Programmable Controllers Cat No W130 E1 05 ...
Page 2: ...C200H Programmable Controllers CPU01 E 03 E 11 E Operation Manual Revised June 2003 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 8: ...TABLE OF CONTENTS ix Glossary 345 Index 363 Revision History 369 ...
Page 342: ...336 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage ...
Page 374: ...Cat No W130 E1 05 C200H Programmable Controllers CPU01 E 03 E 11 E OPERATION MANUAL ...