334
PLC Comparison Charts Appendix A
Auxil-
iary
Area,
contd
Errors Error log storage
area/pointer
Yes Yes No Yes No
Error codes Yes Yes Yes Yes Yes
Initial
set-
tings
Initializing PLC Setup No No Yes No Yes
Com-
muni-
cations
PLC Link Operating
Level Flags
Yes (PLC Link Auxil-
iary Area bit)
Yes (PLC Link
Auxiliary Area bit)
Yes (AR) No No
Power
supply
Power Interruption
Flag
No No No Yes No
Power Interruption
Time
No No No Yes No
Power ON Time Yes Yes No Yes No
Time at Power Inter-
ruption (including
power OFF)
Yes Yes No Yes Yes
Number of Momen-
tary Power Interrup-
tions
Yes (Number of power
interruptions)
Yes (Number of
power interrup-
tions)
Yes (Number of
power interrup-
tions)
Yes Yes (Number of
power interrup-
tions)
Total Power ON Time Yes Yes No No No
Allocation meth-
ods
Format Allocation is based on
number of words
required by Units in
order of connection.
Allocation is
based on num-
ber of words
required by Units
and vacant slots
are skipped.
Fixed word allo-
cation: Each
Unit is automat-
ically allocated
one word
Allocation is
based on num-
ber of words
required by
Units and
vacant slots
are skipped.
Allocation is
based on num-
ber 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 alloca-
tion area in IR
Area (position
determined by
front panel
switch)
None None
Word reservation
method
Change I/O table from
CX-Programmer.
Change I/O table
from CX-Pro-
grammer.
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 allo-
cation at star-
tup.
Spe-
cial I/O
Unit
alloca-
tion
CIO Area Allocation in Special I/
O Unit Area accord-
ing to Unit No.
10 words per Unit for
total of 96 Units.
Allocation in Spe-
cial 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) accord-
ing to Unit No.
10 words per
Unit for total of
16 Units.
Same as for
Basic I/O Units;
2 or 4 words
allocated in I/O
Area (differs for
each Unit)
Same as for
Basic I/O Units;
1, 2, or 4 words
allocated 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
D20000 to
D29599 accord-
ing to unit num-
ber, 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.
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.
Allocation in
D30000 to
D31599 accord-
ing 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 CJ Series CS Series C200HX/HG/
HE
CVM1/CV
Series
CQM1H
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