Omron SYSMAC CS Series Instruction & Reference Manual page 155

FOR/NEXT
Instruction
---
Symbol
Applicable Program Areas
Function block
Area
definitions
Usage OK
Operands
Operand
N Number of loops
N: Number of loops
The number of loops must be 0000 to FFFF (0 to 65,535 decimal).
 Operand Specifications
Word addresses
Area
CIO WR HR AR
N OK OK OK OK
Flags
Name
Error Flag
Equals Flag
Negative Flag
Function
The instructions between FOR(512) and NEXT(513)
are executed N times and then program execution
continues with the instruction after NEXT(513). The
BREAK(514) instruction can be used to cancel the
loop.
If N is set to 0, the instructions between FOR(512) and
NEXT(513) are processed as NOP(000) instructions.
Loops can be used to process tables of data with a
minimum amount of programming.
Note If a loop repeats in one cycle and a differentiated bit is used in the FOR-NEXT loop, that bit will be always ON or always
OFF within that loop.
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Mnemonic Variations
FOR ---
NEXT ---
FOR
FOR(512)
N N: Number of loops
Block program areas Step program areas
Not allowed OK
Description
Indirect DM/EM
@DM
T C DM EM
@EM
OK OK OK OK
Label
ER • ON if more than 15 loops are nested.
• OFF in all other cases.
= OFF
N OFF
Function
code
The instructions between FOR(512) and
512
NEXT(513) are repeated a specified number of
513
times.
Subroutines
OK
Data type
UINT
addresses
Con-
stants
*DM
DR
*EM
OK OK OK OK
Operation
Repeated program section
3. Instructions
Function
NEXT
NEXT(513)
SFC action or
Interrupt tasks
transition programs
OK OK
Size
1
Registers Flags
Pulse
bits
Indirect
IR TK CF
using IR
--- OK --- ---
Repeated N times
3
TR
bits
--- ---
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