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Appendices Appendix-3 PLC Memory Areas
A-13
NS Series Programming Manual
A-3-3 OMRON CS-series CS1G, CS1H, CS1G-H, and CS1H-H PLC
Memory Areas
For 1:N NT Links
PLC
model
Data area
(CIO)
Holding
area (HR)
Auxiliary
area (AR)
(See note 1.)
Link area
(LR)
(See note 2.)
Timer/counter
present value
(TIM/CNT)
Data
memory
area (DM)
EM area
(EM, EM0 to
EMC)
(See note 5.)
CS1G
CS1H
CS1G-H
CS1H-H
CS1D
00000
to
06143
00000
to
00511
00000
to
00959
00000
to
00199
00000
to
04095
00000
to
32767
00000
to
32767
Work area
(WR)
Task flags
(TK)
(See note 3.)
Timer
completion
flags (TU)
(See note 4.)
Counter
completion
flags (CU)
(See note 4.)
00000
to
00511
−−−
00000
to
04095
00000
to
04095
CS1G, CS1H, CS1G-H, and CS1H-H PLCs only support 1:N NT Link communications.
Note 1. For CS1G, CS1H, CS1G-H, and CS1H-H PLCs, AR00000 to AR00447 is a read-only area.
2. CS1G, CS1H, CS1G-H, and CS1H-H PLCs do not have an LR area, but if the screen data uses the LR
area, this will be automatically converted internally to CIO01000 to CIO01199 in the CIO area.
3. Task flags cannot be used with PTs.
4. These areas cannot be set as the allocated addresses for system memory $SB or $SW.
Communications cannot be performed simultaneously for 63 or more points. If 64 or more points are set,
a communications (settings) error will occur during operation. These areas cannot be used by
READCMEM or WRITECMEM macros.
These areas cannot be set to ON/OFF Buttons or other objects that write bit data. These areas can be
set only to bit lamps and other objects that read bit data.
5. Specify a bank for the data area when setting a bit address in the EM. If the data area is specified using
the current bank, the ON/OFF function may not be able to be used correctly, depending on the status of
other bits in the EM area for the same word number.