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Chapter 4. PLC Program
4.3 Description of PLC basic commands
1) LOAD
(1) Definition
Get the content(0 or 1) of a contact designated by a load command to be memorized into
the current operation result.
The content of the previous operation results is stored into a previous operation result
storage buffer.(See the AND LOAD, OR LOAD)
Use it in starting a logic operation or a block operation. (See the AND LOAD, OR LOAD)
(2) Sequence and timing chart
2) LOAD NOT
(1) Definition
Reverse the content of a contact designated by a LOAD NOT command, and then get it to be
memorized into an operation result.
The content of the previous operation results is stored into a previous operation result
storage buffer.(See the AND LOAD, OR LOAD)
Use it in starting a logic operation or a block operation. (See the AND LOAD, OR LOAD)
(2) Sequence and timing chart