5-3. Description of Basic Instructions
104
Outline
OR: Connects a Form A (normally open) contact in parallel.
OR/: Connects a Form B (normally closed) contact in parallel.
Program example
■
Operands
■
Time chart
■
Explanation of example
• Y0 goes ON when either X0 or X1 turns ON or X2 turns OFF.
Description
• Performs a logical OR operation with the results of the immediately preceding operation
connected in parallel.
Notes:
• Use the
OR
instruction when the normally open contact (Form A contact) is connected in parallel. Use the
OR
/
instruction when the normally closed contact (Form B contact) is connected in parallel.
• The
OR
instruction starts from the bus line.
• The
OR
and
OR
/
instructions can be used consecutively.
ON
OFF
X0
ON
OFF
X1
ON
OFF
X2
ON
OFF
Y0
Timer/Counter
Contact
C
Relay
T
R
Y
X
Instruction
OR, OR/
A
A
A
A
A
A:
N/A: Not Available
Available
OR
OR
OR/
OR Not
Ladder Diagram
FP Programmer
II
key operations
Boolean Non-ladder
Address Instruction
0
X0
Y0
1
X1
OR
X2
OR Not
2
ST
X-WX
ST
X-WX
ST
X-WX
0
WRT
OR
R-WR
WRT
1
OR
R-WR
NOT
DT/Ld
WRT
OT
L-WL
AN
Y-WY
0
WRT
ST
X-WX
WRT
2
0
1
2
3
ST
X
0
OR
X
1
OR/
X
2
OT
Y
0
Availability
Step
1
1
All series
Содержание FP1
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