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7: BASIC INSTRUCTIONS

7-8 USER’S MANUAL

Example: OR LOD (Load)

For the following circuit, the OR LOD instruction can be used in two ways.

First, the OR LOD instruction can be keyed following each of the sets of circuits that

are to be connected in parallel.

Second, the OR LOD instruction can be entered twice at the end, after all the circuits

to be connected in parallel have been keyed.

In either way, there is a relationship between the quantity of LOD instructions and the

quantity of OR LOD instructions:

Quantity of OR LOD instructions = Quantity of LOD instructions – 1

Block A

Ladder Diagram

Block B

Block C

Operation Register Stack Register

LOD I1

AND I2

Prgm Adrs Instruction Data

LOD

AND

LOD

AND

OR LOD

LOD

AND

OR LOD

Program List 1

LOD I3

AND I4

LOD

LOD I5

AND I6

LOD

The program represented by Block A is

stored beginning with the LOD I1 instruc-

tion, and Block B is stored with LOD I3.

Then, these two programs are read by the

OR LOD instruction which is entered next,

forming a circuit connected in parallel.

The program represented by Block C is stored

beginning with the LOD I5 instruction. This is

read by the ﬁnal OR LOD instruction, so that it

is connected in parallel with the two programs

connected previously.

I3 I4

I1 I2

I5 I6

Operation Register Stack Register

LOD I1

AND I2

Prgm Adrs Instruction Data

LOD

AND

LOD

AND

LOD

AND

OR LOD

Program List 2

LOD I3

AND I4

LOD

LOD I5

AND I6

LOD

The program represented by Block A is

stored beginning with the LOD I1 instruc-

tion, Block B is stored with LOD I3, and

Block C is stored with LOD I5.

Then, the OR LOD instruction is entered

twice consecutively, connecting the blocks

in parallel, sequentially.

In this case, the number of stored circuits

and read operations are increased.

I3 I4

I1 I2

I5 I6

I5 I6 I3 I4 I1 I2

I1 I2

Brand	IDEC
Model	MICRO3
Category	Controller
Language	English

IDEC MICRO3 User Manual

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IDEC MICRO3 Specifications

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