Omron CJ1G-CPUxx, Instructions Manual

Page: 639 / 1144

618
Table Data Processing Instructions
Section 3-17
All of these instructions define or operate on a group of words. The group of
words in a stack are defined by SSET(630), the group of words in a record-
table are defined by DIM(631), and the group of words used in a range
instruction are defined independently in each instruction.
Stack Instructions Stack instructions act on specially defined data tables called stacks. The first
two words of the stack contain the PLC memory address of the last word in
the stack and the second two words contain the stack pointer (the PLC mem-
ory address of the word that will be overwritten by the next PUSH(632)
instruction).
LAST IN FIRST OUT LIFO 634 632
DIMENSION RECORD TABLE DIM 631 635
SET RECORD LOCATION SETR 635 638
GET RECORD NUMBER GETR 636 640
DATA SEARCH SRCH 181 642
SWAP BYTES SWAP 637 644
FIND MAXIMUM MAX 182 646
FIND MINIMUM MIN 183 650
SUM SUM 184 653
FRAME CHECKSUM FCS 180 656
STACK NUMBER OUTPUT SNUM 638 659
STACK DATA READ SREAD 639 662
STACK DATA OVERWRITE SWRIT 640 665
STACK DATA INSERT SINS 641 668
STACK DATA DELETE SDEL 642 671
Group Purpose Instructions
Stack Operate FIFO (first-in first-out) or LIFO
(last-in first-out) data tables. SSET(630), PUSH(632),
FIFO(633), LIFO(634),
SREAD(639), SWRIT(640),
SINS(641), SDEL(642), and
SNUM(638)
Record-table Operate tables of data made up of
records. (Record size is user-defined.) DIM(631), SETR(635), and
GETR(636)
Range Operates on a range of words to find
values such as the checksum, a particu-
lar value, the maximum value, or mini-
mum value in the range. FCS(180), SRCH(181),
MAX(182), MIN(183),
SUM(184), and SWAP(637)
Instruction Mnemonic Function code Page
I/O memory
Stack region