Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual page 609

Table Data Processing Instructions
Operands
Operand Specifications
576
TB through TB+3: Stack control words
The first four words of the stack contain the PLC memory address of the last
word in the stack and the stack pointer (the PLC memory address of the next
word to be overwritten by PUSH(632)).
15
TB
PLC memory address of the last
word in the stack (rightmost 4 digits)
15
TB+1
PLC memory address of the last
word in the stack (leftmost 4 digits)
15
TB+2
Stack pointer (rightmost 4 digits)
15
TB+3
Stack pointer (leftmost 4 digits)
TB+4 through TB+(N–1): Data storage region
The remainder of the stack is used to store data.
15
Data storage region
TB+4
---
TB+(N–1)
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
Indirect DM addresses
in binary
Indirect DM addresses
in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
0
0
0
0
0
TB
CIO 0 to CIO 6143
W0 to W511
H0 to H511
A448 to A959
T0000 to T4095
C0000 to C4095
D0 to D32767
@ D0 to @ D32767
*D0 to *D32767
---
---
---
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Section 3-16
D
DR0 to DR15