Omron SYSMAC C20P Operation Manual page 122

Converting to Mnemonic Code
Address Instruction Data
0000 LD
0001 AND
0002 OR
0003 AND
0004 AND
0005 LD
0006 AND
0007 OR LD
0008 AND
0009 OUT
Our last example may at first appear very complicated but can be coded us-
ing only two logic block instructions. The diagram appears as follows:
Block a
0000 0001 0002 0003
0100 0101
0500
Block b
The first logic block instruction is used to combine the execution conditions
resulting from blocks a and b, and the second one is used to combine the
execution condition of block c with the execution condition resulting from the
inverse condition assigned 0003. The rest of the diagram can be coded with
ladder instructions. The logical flow for this and the resulting code are shown
below.
Block a
0000 0001
LD 0000
AND 0001
OR LD
0500
LD 0500
0002 0003
LD 0002
AND NOT 0003
0006
0007
0005
0003
0004
0001
0002
––
0000
0505
0004 0005
0006
Block c
Block b
0100 0101
LD 0100
AND 0101
Block c
0004 0005
LD 0004
AND 0005
0006
LD 0006
AND LD
0505
Section 7–2
0505
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