Omron CQM1H - PROGRAM Programming Manual page 214

Programmable controllers; inner boards

Table of Contents

Basic Ladder Diagrams

Address Instruction

Address Instruction

Combining AND LOAD

Again, with the method on the right, a maximum of eight blocks can be com-

bined. There is no limit to the number of blocks that can be combined with the

first method.

The following diagram requires OR LOAD instructions to be converted to

mnemonic code because three pairs of conditions in series lie in parallel to

The first of each pair of conditions is converted to LOAD with the assigned bit

operand and then ANDed with the other condition. The first two blocks can be

coded first, followed by OR LOAD, the last block, and another OR LOAD, or

the three blocks can be coded first followed by two OR LOADs. The mne-

monic code for both methods is shown below.

Again, with the method on the right, a maximum of eight blocks can be com-

bined. There is no limit to the number of blocks that can be combined with the

first method.

Both of the coding methods described above can also be used when using

AND LOAD and OR LOAD, as long as the number of blocks being combined

does not exceed eight.

Address Instruction

Address Instruction

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