Omron SYSMAC C200HS Operation Manual page 37

Introduction
3-1 Introduction
Area
I/O Area 480 bits
Group-2 High-density 320 bits
I/O Unit and B7A
Interface Unit Area
SYSMAC BUS Area 800 bits
Special I/O Unit Area 1,600 bits
Optical I/O Unit and I/O 512 bits
Terminal Area
Work Area 1 64 bits
Special Relay Area 1 312 bits
Special Relay Area 2 704 bits
Macro Area
64 bits
64 bits
Work Area 2 3,392 bits
Temporary Relay Area 8 bits
Holding Relay Area 1,600 bits
Auxiliary Relay Area 448 buts
Link Relay Area 1,024 bits
Timer/Counter Area 512 counters/
timers
Data Memory Area y 6,144 words
Fixed DM Area 512 words
Expansion DM Area 3,000 words max.
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Details, including the name, size, and range of each area are summarized in the
following table. Data and memory areas are normally referred to by their acro-
nyms, e.g., the IR Area, the SR Area, etc.
Size
IR 000 to IR 029
IR 030 to IR 049
IR 050 to IR 099
IR 100 to IR 199
IR 200 to IR 231
IR 232 to IR 235
SR 23600 to SR
25507
SR 256 to SR 299
(298 to 299 reserved
by system)
SR 290 to SR 293
SR 294 to SR 297
IR 300 to IR 511
TR 00 to TR 07
HR 00 to HR 99
AR 00 to AR 27
LR 00 to LR 63
TC 000 to TC 511
DM 0000 to DM 6143
1,000 words DM 0000 to DM 0999
1,000 words DM 1000 to DM 1999
4,000 words DM 2000 to DM 5999
31 words DM 6000 to DM 6030
(44 words) DM 6100 to DM 6143
DM 6144 to DM 6599
56 words DM 6600 to DM 6655
DM 7000 to DM 9999
Note 1. These can be used as work words and bits when not used for their allocated
purposes.
2. The PC Setup can be set to use DM 7000 through DM 7999 as the Special
I/O Area.
Range
I/O words are allocated to the CPU Rack and
Expansion I/O Racks by slot position.
Allocated to Group-2 High-density I/O Units and
to Group-2 B7A Interface Units 0 to 9
Allocated to Remote I/O Slave Racks 0 to 4.
Allocated to Special I/O Units 0 to 9.
Allocated to Optical I/O Units and I/O
Terminals.
For use as work bits in the program.
Contains system clocks, flags, control bits, and
status information.
Contains flags, control bits, and status informa-
tion.
Inputs
Outputs
For use as work bits in the program.
Used to temporarily store and retrieve execution
conditions when programming certain types of
branching ladder diagrams.
Used to store data and to retain the data values
when the power to the PC is turned off.
Contains flags and bits for special functions. Re-
tains status during power failure.
Used for data links in the PC Link System.
Used to define timers and counters, and to
access completion flags, PV, and SV.
Interval timers 0 through 2 and high-speed
counters 0 through 2 provided in separate area.
TIM 000 through TIM 015 can be refreshed via
interrupt processing as high-speed timers.
Read/Write
Normal DM.
Special I/O Unit Area
Normal DM.
History Log
Link test area (reserved)
Fixed DM Area (read only)
PC Setup
Read only
Section 3-1
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