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Appendix D
Memory Areas
Overview
The following table shows the data areas in PC memory.
Area
Size
Range
Comments
I/O Area
480 bits
IR 000 to IR 029
Group-2 High-density
I/O Unit Area
320 bits
IR 030 to IR 049
Can be used as ordinary I/O or, if not used for
real I/O, can be used as work bits.
SYSMAC BUS Area
800 bits
IR 050 to IR 099
Can be used as work bits if not used for real I/O.
Special I/O Unit Area
1,600 bits
IR 100 to IR 199
”
Optical I/O Unit Area
512 bits
IR 200 to IR 231
”
Work Area 1
64 bits
IR 232 to IR 235
Special Relay Area 1
320 bits
SR 236 to SR 255
Special Relay Area 2
704 bits
SR 256 to SR 299
Macro Area
64 bits
SR 290 to SR 293
Inputs
64 bits
SR 294 to SR 297
Outputs
Work Area 2
3,424 bits
IR 298 to IR 511
Temporary Relay Area
8 bits
TR 00 to TR 07
Holding Relay Area
1,600 bits
HR 00 to HR 99
Auxiliary Relay Area
448 buts
AR 00 to AR 27
Link Relay Area
1,024 bits
LR 00 to LR 63
Timer/Counter Area
512 counters/
timers
TC 000 to TC 511
TIM 000 through TIM 015 can be refreshed via
interrupt processing as high-speed timers.
Data Memory Area
6,144 words
DM 0000 to DM 6143
Read/Write
y
1,000 words
DM 0000 to DM 1999
Special I/O Unit Area (see note)
31 words
DM 6000 to DM 6030
History Log
(44 words)
DM 6100 to DM 6143
Link test area (reserved)
512 words
DM 6144 to DM 6655
Fixed DM Area (read only)
456 words
DM 6144 to DM 6599
(SYSMAC NET Area)
56 words
DM 6600 to DM 6655
PC Setup
Expansion DM Area
3,000 words max.
DM 7000 to DM 9999
Read only
I/O Comment Area
All UM Area max.
---
Stores I/O comments in the user program. Must
be set using LSS.
Ladder Program Area
All UM Area max.
---
Stores the user program executed by the CPU.
The program is retained even after the power
supply is turned off.
Note The PC Setup can be set to use DM 7000 through DM 7999 as the Special I/O Area.
Содержание SYSMAC C200HS
Страница 1: ...Cat No W235 E1 05 C200HS SYSMAC Programmable Controllers...
Страница 2: ...C200HS Programmable Controllers Operation Manual Revised February 2002...
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Страница 379: ...371 SR word Corresponding key s Bit 279 03 04 05 3 06 07 VER 08 09 Monitoring Operation and Modifying Data Section 7 1...
Страница 470: ...468 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage...
Страница 471: ...469 Programmer Program Date Page TC address T or C Set value Notes TC address T or C Set value Notes Timers and Counters...