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Basic Instructions
ST
ST/
OT
Outline
ST, ST/: Begins a logic operation.
OT:
Program example
0
2
Operands
Instruction
Instruction
X
Y
ST, ST/
A
A
OT
N/A
A
(*1) This cannot be used with the FP0/FP−e.
(*2) This can be used only with the FP2/FP2SH/FP10SH.
(*3) This can be used only with the FP2SH/FP10SH.
(*4) This can be used only with the FP0R/FP2/FP2SH/FP10SH.
Explanation of example
Y10 goes on when X0 turns on.
Y11 goes on when X0 turns off.
on
X0
off
on
Y10
off
on
Y11
off
Description
The ST instruction starts logic operations and regards the input contact specified at the start as a Form A
(normally open) contact.
The ST/ instruction starts logic operations and regards the input contact specified at the start as a Form B
(normally closed) contact.
The OT instruction outputs the operation result to a specified coil.
2 − 8
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Start
Start Not
Out
Outputs the operation result.
Ladder Diagram
Ladder Diagram
X0
Start
Out
X0
Start Not
Out
Timer/Counter
Relay
Contact
L
P
E
R
T
(*1)
(*2)
(*3)
A
A
A
A
A
A
A
N/A N/A
N/A
1
Y10
Y11
Index
modifier
modifier
(*4)
C
A
A
A:
Available
N/A
N/A: Not Available
Boolean
Address
Instruction
0
ST
X
1
OT
Y
10
2
ST/
X
3
OT
Y
0
0
11
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