Omron SYSMAC CS Series Instruction & Reference Manual page 38

1. Basic Understanding of Instructions
Instruction Location and Execution Conditions
Instruction
Input Logical start Connected directly
instruc- (Load to the left bus bar
tions instructions) or is at the begin-
ning of an instruc-
tion block.
Intermediate Between a logical
instructions
start and the out-
put instruction.
Output instructions Connected directly
to the right bus
bar.
4
Example
MOV
#0 S (source)
D0
D (destination)
Operand types
Source Specifies the address of
the data to be read or a
constant.
Destination Specifies the address
(Results) where data will be writ-
ten.
Number Specifies a particular
number used in the
instruction, such as a
jump number or subrou-
tine number.
Note Operands are also called the first operand, second operand, and so on, start-
ing from the top of the instruction.
MOV
#0
First operand
D0
Second operand
The following table shows the possible locations for instructions. Instructions
are grouped into those that do and those do not require execution conditions.
Refer to SECTION 3 Instructions for details.
Location Execution
condition
Not
required.
Required
Required
Not
required.
JMP
&3
N (number)
Operand
symbol
S Source
Operand
C Control
data
D ---
N ---
Diagram
LD, LD TST(350), LD > (and other
symbol comparison instructions)
AND, OR, AND TEST(350), AND >
(and other ADD symbol comparison
instructions), UP(521), DOWN(522),
NOT(520), etc.
Most instructions including OUT and
MOV(021).
END(001), JME(005), FOR(512),
ILC(003), etc.
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Description
Source operand
other than control
data (C)
Compound data in a
source operand that
has different mean-
ings depending bit
status.
Examples