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last two blocks and working backward. The OR LOAD at program address
00008 combines blocks blocks d and e, the following AND LOAD combines
the resulting execution condition with that of block c, etc.
LR 0000
00000
00003
00004
00006
00007
00001
00002
00005
Block e
Block d
Block c
Block b
Block a
Address
Instruction
Operands
Blocks d and e
Block c with result of above
Block b with result of above
Block a with result of above
00000
LD
00000
00001
LD
00001
00002
AND
00002
00003
LD
00003
00004
AND
00004
00005
LD
00005
00006
LD
00006
00007
AND
00007
00008
OR LD
--
00009
AND LD
--
00010
OR LD
--
00011
AND LD
--
00012
OUT
LR
0000
Again, this diagram can be redrawn as follows to simplify program structure
and coding and to save memory space.
00006
00007
LR 0000
00005
00001
00002
00003
00004
00000
Address
Instruction
Operands
00000
LD
00006
00001
AND
00007
00002
OR
00005
00003
AND
00003
00004
AND
00004
00005
LD
00001
00006
AND
00002
00007
OR LD
--
00008
AND
00000
00009
OUT
LR
0000
The next and final example may at first appear very complicated but can be
coded using only two logic block instructions. The diagram appears as fol-
lows:
00000
00001
00500
00002
00003
01000
01001
00004
00005
00500
00006
Block c
Block b
Block a
The first logic block instruction is used to combine the execution conditions
resulting from blocks a and b, and the second one is to combine the execu-
Basic Ladder Diagrams
Section 4-3
Содержание SYSMAC C200H
Страница 1: ...OPERATION MANUAL C200H CPU01 E 03 E 11 E SYSMAC Programmable Controllers Cat No W130 E1 05 ...
Страница 2: ...C200H Programmable Controllers CPU01 E 03 E 11 E Operation Manual Revised June 2003 ...
Страница 3: ...iv ...
Страница 5: ...vi ...
Страница 8: ...TABLE OF CONTENTS ix Glossary 345 Index 363 Revision History 369 ...
Страница 342: ...336 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage ...
Страница 374: ...Cat No W130 E1 05 C200H Programmable Controllers CPU01 E 03 E 11 E OPERATION MANUAL ...