57
tion condition of block c with the execution condition resulting from the nor-
mally closed condition assigned IR 00003. The rest of the diagram can be
coded with OR, AND, and AND NOT instructions. The logical flow for this
and the resulting code are shown below.
00000
00001
00500
00002
00003
01000
01001
00004
00005
00500
00006
Block c
Block b
Block a
OR LD
LD
00000
AND
00001
OR
00500
AND
00002
AND NOT 00003
LD
01000
AND
01001
OR
00006
LD
00004
AND
00005
AND LD
Address
Instruction
Operands
00000
LD
00000
00001
AND
00001
00002
LD
01000
00003
AND
01001
00004
OR LD
--
00005
OR
00500
00006
AND
00002
00007
AND NOT
00003
00008
LD
00004
00009
AND
00005
00010
OR
00006
00011
AND LD
--
00012
OUT
00500
4-3-7
Coding Multiple Right-hand Instructions
If there is more than one right-hand instruction executed with the same exe-
cution condition, they are coded consecutively following the last condition on
Basic Ladder Diagrams
Section 4-3
Содержание SYSMAC C1000H
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