568
Table Data Processing Instructions Section 3-16
Variations
Applicable Program Areas
Operands 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)).
TB+4 through TB+(N–1): Data storage region
The remainder of the stack is used to store data.
Note (1) The initial value of the stack pointer is always the PLC memory address
of TB+4.
(2) TB and TB+(N–1) must be in the same data area.
Operand Specifications
Variations Executed Each Cycle for ON Condition SSET(630)
Executed Once for Upward Differentiation @SSET(630)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
15 0
TB
15 0
TB+1
15 0
TB+2
15 0
TB+3
Stack pointer (leftmost 4 digits)
Stack pointer (rightmost 4 digits)
PLC memory address of the last
word in the stack (leftmost 4 digits)
PLC memory address of the last
word in the stack (rightmost 4 digits)
15 0
TB+4
TB+(N–1)
---
Data storage region
Area TB N
CIO Area CIO 0 to CIO 6143
Work Area W0 to W511
Holding Bit Area H0 to H511
Auxiliary Bit Area A448 to A959 A0 to A959
Timer Area T0000 to T4095
Counter Area C0000 to C4095
To Next Page
Loading...
