Omron CP1E CPU UNIT SOFTWARE - Page 413

A-59
Appendices
CP1E CPU Unit Software User’s Manual(W480)
A-2 Auxiliary Area Allocations by Address
App
A-2-1 Read-only Words
A295 10 Illegal Access Error
Flag
This flag and the Access Error Flag
(AER) will be turned ON when an ille-
gal access error has occurred and the
PLC Setup has been set to stop opera-
tion an illegal access error. (This error
occurs when a region of memory is
accessed illegally.) CPU Unit opera-
tion will stop and the ERR/ALM indica-
tor will light when this flag goes ON.
The following operations are consid-
ered illegal access:
• Reading/writing the system area
• Indirect DM BCD error (in BCD
mode)
Note The task number where the error
occurred will be stored in A294
and the program address will be
stored in A298 and A299.
ON: Illegal access
occurred
OFF: Normal condi-
tion
Cleared Cleared When pro-
gram error
occurs.
A294,
A298/
A299
PLC
Setup
(Opera-
tion when
instruc-
tion error
has
occurred)
11 No END Error Flag ON when there isn’t an END instruction
in each program within a task.
CPU Unit operation will stop and the
ERR/ALM indicator will light when this
flag goes ON.
Note The task number where the error
occurred will be stored in A294
and the program address will be
stored in A298 and A299.
ON: No END
OFF: Normal condi-
tion
Cleared Cleared A294,
A298/
A299
12 Task Error Flag ON when a task error has occurred. A
task error will occur when there is no
program allocated to the task.
Note The task number where the error
occurred will be stored in A294
and the program address will be
stored in A298 and A299.
ON: Error
OFF: Normal
Cleared Cleared A294,
A298/
A299
13 Differentiation Over-
flow Error Flag
The allowed value for Differentiation
Flags which correspond to differentia-
tion instructions has been exceeded.
CPU Unit operation will stop and the
ERR/ALM indicator will light when this
flag goes ON.
Note The task number where the error
occurred will be stored in A294
and the program address will be
stored in A298 and A299.
ON: Error
OFF: Normal
Cleared Cleared A294,
A298/
A299
14 Illegal Instruction Error
Flag
ON when a program that cannot be
executed has been stored. CPU Unit
operation will stop and the ERR/ALM
indicator will light when this flag goes
ON.
ON: Error
OFF: Normal
Cleared Cleared A294,
A298/
A299
15 UM Overflow Error
Flag
ON when the last address in UM (User
Memory) has been exceeded. CPU
Unit operation will stop and the
ERR/ALM indicator will light when this
flag goes ON.
ON: Error
OFF: Normal
Cleared Cleared A294,
A298/
A299
A298 Program Address
Where Program
Stopped
(Lower digits)
These words contain the program
address of the instruction where pro-
gram execution was stopped due to a
program error.
Note A294 contains the task number of
the task where program execu-
tion was stopped.
Lower digits of the
program address
Cleared Cleared A294
A299 Program Address
Where Program
Stopped
(Upper digits)
Upper digits of the
program address
Cleared Cleared
Address
Name Function Settings
Status
after
mode
change
Status at
startup
Write
timing
Related
flags,
settings
Words Bits