Omron C200HX ユーザーズマニュアル

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

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 follows:

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 re-
sulting from blocks a and b, and the second one is to combine the execution
condition of block c with the execution condition resulting from the normally
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

LD

00006

LD

00004

AND

00005

AND LD

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