Omron CJ - PROGRAMMING MANUAL 12-2009 - Page 418

378
PLC Comparison Charts Appendix A
Allocation meth-
ods
Format Allocation is based on number
of words required by Units in
order of connection.
Allocation is
based on
number of
words
required by
Units and
vacant slots
are skipped.
Fixed word
allocation:
Each Unit is
automatically
allocated one
word
Allocation is
based on
number of
words
required by
Units and
vacant slots
are skipped.
Allocation is
based on
number of
words
required by
Units in order
of connection.
Group 2 High-den-
sity I/O Unit alloca-
tion
None Same as for
Basic
I/O
Group-2 allo-
cation area in
IR Area (posi-
tion deter-
mined by front
panel switch)
None None
Word reservation
method
Change I/O table from CX-Programmer. Create I/O
table with
empty slot or
change I/O
table made
from CX-Pro-
grammer.
Dummy I/O
Unit or
change I/O
table from
CX-Program-
mer.
Automatic
allocation at
startup.
Special
I/O Unit
alloca-
tion
CIO Area Allocation in Special I/O Unit Area according to
Unit No. 10 words per Unit for total of 96 Units.
Allocation in
Special I/O
Unit Area (in
IR Area)
according to
Unit No.
10 words per
Unit for total
of 16 Units.
Same as for
Basic I/O
Units; 2 or
4 words allo-
cated in I/O
Area (differs
for each Unit)
Same as for
Basic I/O
Units; 1, 2, or
4 words allo-
cated in I/O
Area (differs
for each Unit)
DM Area Allocation in D20000 to D29599 according to
unit number, 100 words per Unit for total of 96
Units.
Allocation in
DM 1000 to
DM 1999, and
DM 2000 to
DM 2599 100
words per
Unit for total
of 16 Units.
None None
CPU
Bus
Unit/
CPU
Bus
Unit
alloca-
tion
CIO Area Allocation in CPU Bus Unit Area according to
Unit No. 25 words per Unit for total of 16 Units.
None Allocation in
CPU Bus Unit
Area accord-
ing to Unit No.
25 words per
Unit for total
of 16 Units.
None
DM Area Allocation in D30000 to D31599 according to
Unit No. 100 words per Unit for total of 16
Units.
None Allocation in
D02000 to
D03599
according to
Unit No.
100 words per
Unit for total
of 16 Units.
None
Item CJ1-H/CJ1M Series CS1-H Series C200HX/HG/
HE
CVM1/CV
Series
CQM1H
CJ1-H-R CJ1-H CJ1-M