755
Table Data Processing Instructions Section 3-17
Description SDEL(642) deletes the data at the specified location in the stack, outputs that
data to the specified destination word, and shifts the remaining the data in the
stack upward. At the same time, SDEL(642) decrements the stack pointer
(TB+3 and TB+2) by 1. The location of the desired address is calculated by
subtracting the offset value in C from the stack pointer.
SDEL(642) can be used to delete the data for an item that is rejected from the
items on a conveyor. The position of the deletion point is simply the number of
items back (the offset value) from the most recent item added to the conveyor.
EM Area with bank En_00000 to En_32767
(n = 0 to C)
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants --- #0001 to #FFFB
(Hexadecimal)
---
Data Registers --- DR0 to DR15
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area TB C D
A
A
B
C
n
m
TB
TB+1
TB+2
TB+3
TB+4
D
m
n
C
B
C
n
m-1
TB
TB+1
TB+2
TB+3
TB+4
m
n
PLC memory
address
Pointer
The address of the desired word
is calculated by subtracting the
offset value from the stack
pointer address.
Last word
in stack
Stack
Offset value
The stack pointer is
decremented by 1.
Pointer
Stack
Last word
in stack
Deletes the specified
word and decrements
the stack pointer.
PLC memory
address
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