Lifo/Fifo - Omron CJ - REFERENCE MANUAL 02-2010 Reference Manual

LIFO/FIFO

Instruction
LAST IN FIRST OUT
FIRST IN FIRST OUT
Symbol
Applicable Program Areas
Function block
Area
definitions
Usage OK
Operands
Operand
TB First stack address
D Destination word
TB: First stack address
TB through TB+3: Stack control words
15
TB
15
TB+1
15
TB+2
15
TB+3
Operand Specifications
Word addresses
Area
CIO WR HR
TB
OK OK OK
D
CS/CJ/NSJ Series Instructions Reference Manual (W474)
Mnemonic Variations
LIFO @LIFO
FIFO @FIFO
LIFO
LIFO(634)
TB TB: First stack address
D
D: Destination word
Block program areas Step program areas
OK OK
Description
0
PC memory address of the last
word in the stack (rightmost 4 digits)
0
PC memory address of the last
word in the stack (leftmost 4 digits)
0
Stack pointer (rightmost 4 digits)
0
Stack pointer (leftmost 4 digits)
AR T C DM EM
OK OK OK OK OK
Function
code
Reads the last word of data written to the specified
634
stack (the newest data in the stack).
Reads the first word of data written to the speci-
633
fied stack (the oldest data in the stack).
Subroutines
OK
Data type
UINT
UINT
TB+4 through TB+(N-1): Data storage region
TB+4
TB+(N–1)
Indirect DM/EM
addresses
Con-
stants
@DM *DM
DR
@EM *EM
---
OK OK ---
OK
3. Instructions
Function
FIFO
FIFO(633)
TB TB: First stack address
D
D: Destination word
SFC action or
Interrupt tasks
transition programs
OK OK
Size
Variable
1
15 0
Data storage region
---
Registers Flags
Pulse
Indirect
IR TK CF
using IR
--- OK --- ---
3
TR
bits bits
--- ---
557