Omron SYSMAC CS1D-PD Series Operation Manual page 304

I/O Memory Areas
Area Size
DM Area 32,768
words
EM Area 32,768
words
per bank
(0 to 18,
25 max.)
Timer Completion 4,096
Flags bits
Counter Completion 4,096
Flags bits
Timer PVs 4,096
words
Counter PVs 4,096
words
Task Flag Area 32 bits
Index Registers (See 16 regis-
note 5.) ters
Data Registers (See 16 regis-
note 5.) ters
Note
8-2-2 Overview of the Data Areas
CIO Area
264
Range Exter- Bit
nal I/O access
alloca-
tion
D00000 to --- No (See
D32767 note 4.)
E0_00000 --- No (See
to note 4.)
E18_3276
7
T0000 to --- OK
T4095
C0000 to --- OK
C4095
T0000 to --- ---
T4095
C0000 to --- ---
C4095
TK00 to --- OK
TK31
IR0 to --- OK
IR15
DR0 to --- No
DR15
1. The I/O Area can be expanded to CIO 0000 to CIO 0999 by changing the
first words allocated to Racks.
2. If the IOM Hold Bit (A50012) is ON, the content of these words will be held
even if the operating mode is changed.
If the PLC Setup's "IOM Hold Bit Status at Startup" setting is also set to
protect the IOM Hold Bit, the contents of the I/O Area won't be cleared
when the PLC's power supply is cycled OFF and ON again.
3. H512 to H1535 are Function Block Holding Area words.
They can be set only in the FB instance area (internally-assigned range of
variables).
4. Bits in the DM Area and EM Area can be manipulated using TST(350),
TSTN(351), SET, SETB(532), RSTB(533), OUTB(534).
5. Index registers and data registers can be used either individually by task
or they can be shared by all the tasks.
6. Timer PVs can be refreshed indirectly by forced setting/resetting Timer
Completion Flags.
7. Counter PVs can be refreshed indirectly by forced setting/resetting
Counter Completion Flags.
The data areas in the I/O Memory Area are described in detail below.
It isn't necessary to input the "CIO" acronym when specifying an address in
the CIO Area. The CIO Area is generally used for data exchanges such as I/O
refreshing with various Units. Words that aren't allocated to Units may be
used as work words and work bits in the program only.
Word Access
access
Read Write
OK OK OK
OK OK OK
--- OK OK
--- OK OK
OK OK OK
OK OK OK
--- OK No
OK Indirect Specific
address- instruc-
ing only tions
only
OK OK OK
Section 8-2
Change Status at Forcing
from startup
bit sta-
Pro- or mode tus
gram- change
ming
Device
OK Main- No
tained
OK Main- No
tained
OK Cleared OK
(See note
2.)
OK Main- OK
tained
OK Cleared No (See
(See note note 6.)
2.)
OK Main- No (See
tained note 7.)
No Cleared No
No Cleared No
(See note
2.)
No Cleared No
(See note
2.)