Coordinator module – Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-MMA21 User Manual
Page 323
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I/O Memory
Appendix B
I/O Memory Structure
Coordinator Module
The following table shows the basic structure of the I/O Memory for the Coordinator Module.
Note When data is written from the CX-Programmer or a host controller, these DM Area words are backed up
in flash memory. The contents of flash memory is read out each time the power is turned ON.
Area
Size
Range
Task
usage
External
I/O allo-
cation
Bit
access
Word
access
Access
Change
from
CX-Pro-
gram-
mer
Status
at
power
ON
Status
at
mode
change
Forc-
ing
bit
sta-
tus
Read
Write
CIO
Area
I/O Area
24 bits
(2
words)
CIO 0000
to
CIO 0001
Shared
by all
tasks
OK
Coordi-
nator
Module
OK
OK
OK
OK
OK
Cleared
Cleared
OK
Serial PLC
Link Area
320 bits
(20
words)
CIO 0080
to
CIO 0099
---
OK
OK
OK
OK
OK
OK
Cyclic
Refresh Bit
Area
600 bits
(40
words)
CIO 0100
to
CIO 0139
---
OK
OK
OK
OK
OK
OK
Synchro-
nous Data
Link Bit
Area
320 bits
(20
words)
CIO 0200
to
CIO 0219
---
OK
OK
OK
OK
OK
OK
Internal I/O
Areas
2,784
bits
(174
words)
CIO 0002
to
CIO 0079
CIO 0140
to
CIO 0199
CIO 0220
to
CIO 0255
---
OK
OK
OK
OK
OK
OK
Work Area
4,096
bits (256
words)
W000 to
W255
---
OK
OK
OK
OK
OK
Cleared
Cleared OK
Auxiliary Area
10,400
bits (650
words)
A000 to
A649
---
OK
OK
OK
OK
OK
Cleared
Main-
tained
No
TR Area
16 bits
TR0 to
TR15
---
OK
---
OK
OK
No
Cleared
Cleared
No
DM Area
30,000
words
D00000
to
D29999
---
No
OK
OK
OK
OK
Cleared
Main-
tained
No
2,768
words
D30000
to
D32767
---
No
OK
OK
OK
OK
Main-
tained
(See
note.)
Main-
tained
No
Timer Area
256
words
T0000 to
T0255
---
OK
---
OK
OK
OK
Cleared
Cleared
OK
Counter Area
256
words
C0000 to
C0255
---
OK
---
OK
OK
OK
Cleared
Main-
tained
OK