Omron CJ - INSTRUCTIONS REFERENCE MANUAL 07-2009 Reference Manual page 42

Instruction Variations
Execution Conditions
Non-differentiated Instructions
CS/CJ/NSJ Series Instructions Reference Manual (W474)
The following variations are available for instructions to differentiate executing
conditions and to refresh data when the instruction is executed (immediate
refresh).
Variation
Differentiation ON
OFF %
Immediate refreshing
@
MOV
Instruction (mnemonic)
Differentiation variation
Immediate refresh variation
The following two types of basic and special instructions can be used.
• Non-differentiated instructions: Executed every cycle
• Differentiated instructions: Executed only once
■ Output instructions (Instructions That Require Input Conditions):
These instructions are executed once every cycle while the execution condi-
tions are satisfied (ON or OFF).
Non-differentiated
output instruction
■
Input Instructions (Logical Starts and Intermediate Instructions):
These instructions read bit status, make comparisons, test bits, or perform
other types of processing every cycle. If the results are ON, power flow is out-
put (i.e., the execution condition is turned ON).
Non-differentiated input instruction
■ Time Chart
Bit A
Bit A
Bit B
1. Basic Understanding of Instructions
Symbol
@ Instruction that differentiates when the execution
condition turns ON.
Instruction that differentiates when the execution
condition turns OFF.
! Refreshes data in the I/O area specified by the
operands or the Special I/O Unit words when the
instruction is executed.
Example
Example
Bit B
Description
MOV
1
5