Instruction Location And Execution Conditions - Omron CS1G/H-CPUxx-EV1 Programming Manual

Basic Concepts
2-1-3

Instruction Location and Execution Conditions

Instruction type
Input instructions Logical start (Load
instructions)
Intermediate
instructions
Output instructions
Note
Note Operands are also called the first operand, second operand, and so on, start-
ing from the top of the instruction.
The following table shows the possible locations for instructions. Instructions
are grouped into those that do and those do not require execution conditions.
See SECTION 3 Instruction Functions Instructions for details on individual
instructions.
Possible location
Connected directly
to the left bus bar
or is at the begin-
ning of an instruc-
tion block.
Between a logical
start and the out-
put instruction.
Connected directly
to the right bus
bar.
1. There is another group of instruction that executes a series of mnemonic
instructions based on a single input. These are called block programming
instructions. Refer to the CS/CJ Series CPU Units Instruction Reference
Manual for details on these block programs.
2. If an instruction requiring an execution condition is connected directly to
the left bus bar without a logical start instruction, a program error will occur
when checking the program on a Programming Device (CX-Programmer
or Programming Console).
First operand
Second operand
Execution Diagram
condition
Not required.
Required.
Required.
Not required.
Section 2-1
Examples
LD, LD TST(350),
LD > (and other
symbol compari-
son instructions)
AND, OR, AND
TEST(350), AND
> (and other ADD
symbol compari-
son instructions),
UP(521),
DOWN(522),
NOT(520), etc.
Most instructions
including OUT and
MOV(021).
END(001),
JME(005),
FOR(512),
ILC(003), etc.
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