Cutler-Hammer D320 PLC, User Manual

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84
D320 PLC User's Manual
A B
Instruction
Mnemonic Reverse Range
■
Bit
Word
NOT Reverse the previous status of the
logic.
Double words
Ladder
Reverse the logic result of the input conditions before A at B.
Reverse the previous On/Off state and transfer to the next input.
The results of the NOT execution:
Before After
A (On)
→
B (Off)
A (Off)
→
B (On)
Description
1. The instruction cannot be connected directly to the bus  it must come after a contact or set of
contacts.
2. The instruction directly inverts the result of the input conditions before it. The instruction can
be used for verification of the circuit or in the test stage.
A B C
On On Off
Off On On
On Off On
Off Off On
Example
Program Expression Time Chart
C
A B (OUT)
R000.0 R000.1 R001.0
(OUT)
R000.0
R000.1
R001.0