Auxiliary Area Allocations - Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual

The tables list the functions of Auxiliary Area words and bits in order of their addresses. For a list of Auxiliary
Area words and bit by function, refer to SECTION 8 Memory Areas.
The Auxiliary Area consists of read-only words A000 to A447 and read/write words A448 to A959.
Read-only Words
The following words and bits are written by the system to provide information on PLC operation.
Address Name
Words Bits
A019 Previous Cause of Switching to Simplex Operation (Duplex CPU Systems only)
A01900 Duplex
Verifica-
tion Error
Switch
Flag
A01901 Duplex
Bus Error
Switch
Flag
A01902 Duplex Ini-
tialization
Error
Switch
Flag
A01903 CPU Unit
Setting
Switch
Flag
A01904 CPU Error
(WDT)
Switch
Flag
A01906 FALS
Instruc-
tion Error
Switch
Flag
A01908 Cycle
Time
Overrun
Switch
Flag
A01909 Program
Error
Switch
Flag
A01912 Fatal Inner
Board
Error
Switch
Flag
A01915 Memory
Error
Switch
Flag
Appendix B

Auxiliary Area Allocations

Function
ON: A duplex verification error caused the
previous switch from duplex to simplex
operation.
ON: A duplex bus error caused the previ-
ous switch from duplex to simplex opera-
tion.
ON: An error during duplex initialization
caused the previous switch from duplex to
simplex operation and duplex operation
was never started.
ON: Changing the CPU Unit's switch from
USE to NO USE caused the previous
switch from duplex to simplex operation.
ON: A CPU Unit error (WDT) caused the
previous switch from duplex to simplex
operation.
ON: Execution of an FALS instruction
caused the previous switch from duplex to
simplex operation.
ON: Exceeding the cycle time caused the
previous switch from duplex to simplex
operation.
ON: A program error caused the previous
switch from duplex to simplex operation.
ON: A fatal Inner Board error caused the
previous switch from duplex to simplex
operation. (Process-control CPU Units
only)
ON: A memory error caused the previous
switch from duplex to simplex operation.
Settings Status Status
after
mode startup
change
ON: Switched to Held Held
simplex opera-
tion for duplex
verification error
OFF: Normal
ON: Switched to
simplex opera-
tion for duplex
bus error
OFF: Normal
ON: Switched to
simplex opera-
tion for duplex
initialization
error
OFF: Normal
ON: Switched to
simplex opera-
tion for CPU set-
ting
OFF: Normal
ON: Switched to
simplex opera-
tion for CPU
error
OFF: Normal
ON: Switched to
simplex opera-
tion for FALS
instruction
OFF: Normal
ON: Switched to
simplex opera-
tion for cycle
time error
OFF: Normal
ON: Switched to
simplex opera-
tion for program
error
OFF: Normal
ON: Switched to
simplex opera-
tion for fatal
Inner Board
error
OFF: Normal
ON: Switched to
simplex opera-
tion for memory
error
OFF: Normal
Timing Related
at flags,
settings
Data from ---
A023 is
stored
when
duplex
operation
is recov-
ered.
501