And Lod (Load); Or Lod (Load) - IDEC FC4A-C10R2 User Manual

AND LOD (Load)

The AND LOD instruction is used to connect, in series, two or more circuits starting with the LOD instruction. The AND
LOD instruction is the equivalent of a "node" on a ladder diagram.
When using , the user need not program the AND LOD instruction. The circuit in the ladder diagram shown
WindLDR
below is converted into AND LOD when the ladder diagram is compiled.
Ladder Diagram
I0 I2 Q0
I3
Timing Chart
ON
I0
OFF
ON
I2
OFF
ON
I3
OFF
ON
Q0
OFF

OR LOD (Load)

The OR LOD instruction is used to connect, in parallel, two or more circuits starting with the LOD instruction. The OR
LOD instruction is the equivalent of a "node" on a ladder diagram.
When using WindLDR , the user need not program the OR LOD instruction. The circuit in the ladder diagram shown below
is converted into OR LOD when the ladder diagram is compiled.
Ladder Diagram
I0 I1 Q0
I2 I3
Timing Chart
ON
I0
OFF
ON
I1
OFF
ON
I2
OFF
ON
I3
OFF
ON
Q0
OFF
Program List
Instruction Data
LOD I0
LOD I2
OR I3
ANDLOD
OUT Q0
When input I0 is on and either input I2 or
I3 is on, output Q0 is on.
When input I0 is off or both inputs I2 and
I3 are off, output Q0 is off.
Program List
Instruction Data
LOD I0
AND I1
LOD I2
AND I3
ORLOD
OUT Q0
When both inputs I0 and I1 are on or both
inputs I2 and I3 are on, output Q0 is on.
When either input I0 or I1 is off and either
input I2 or I3 is off, output Q0 is off.
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