Omron CPM1 Programming Manual

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Ladder Diagram Instructions Section 5-7
5-7 Ladder Diagram Instructions
Ladder diagram instructions include ladder instructions and logic block
instructions and correspond to the conditions on the ladder diagram. Logic
block instructions are used to relate more complex parts.
5-7-1 LOAD, LOAD NOT, AND, AND NOT, OR, and OR NOT
Limitations There is no limit to the number of any of these instructions, or restrictions in
the order in which they must be used, as long as the memory capacity of the
PC is not exceeded.
Description These six basic instructions correspond to the conditions on a ladder diagram.
As described in SECTION 4 Ladder-diagram Programming, the status of the
bits assigned to each instruction determines the execution conditions for all
other instructions. Each of these instructions and each bit address can be
used as many times as required. Each can be used in as many of these
instructions as required.
The status of the bit operand (B) assigned to LD or LD NOT determines the
first execution condition. AND takes the logical AND between the execution
condition and the status of its bit operand; AND NOT, the logical AND
between the execution condition and the inverse of the status of its bit oper-
and. OR takes the logical OR between the execution condition and the status
of its bit operand; OR NOT, the logical OR between the execution condition
and the inverse of the status of its bit operand.
Flags There are no flags affected by these instructions.
B: Bit
IR, SR, AR, HR, TC, LR, TR
Ladder Symbols Operand Data Areas
LOAD – LD
B
B: Bit
IR, SR, AR, HR, TC, LR
LOAD NOT – LD NOT
B
B: Bit
IR, SR, AR, HR, TC, LR
AND – AND
B
B: Bit
IR, SR, AR, HR, TC, LR
AND NOT – AND NOT
B
B: Bit
IR, SR, AR, HR, TC, LR
OR – OR
B
B: Bit
IR, SR, AR, HR, TC, LR
OR NOT – OR NOT
B

Omron CPM1 Specifications

General

Brand	Omron
Model	CPM1
Category	Controller
Language	English