Omron CP1E-E10DT-A, User Manual

Page: 148 / 280

6-9
6 Troubleshooting
CP1E CPU Unit Hardware User’s Manual(W479)
6
-1
T
roub
le
s
hoot
ing CPU U
n
it
Er
ror
s
6
6-1-8
F
a
ta
l Erro
rs
z
Reference
A program error indicates a problem with the user program. Refer to the error information, check the
program, and correct the mistakes.
Clear the error once the problem has been corrected.
Error flag Too Many I/O Points Flag, A401.11
Error code (A400) 80E1
Error information Too Many I/O Points Details, A407
Program Errors
Cause Remedy
Instruction Processing Error (A295.08 turns ON)
The instruction could not be executed because of
incorrect operand data, and the ER Flag was turned
ON. (Only when the Stop CPU on Instruction Error
parameter in the PLC Setup is set to Stop.)
• Refer to A298 and A299 (instruction program address
when the program fails), check the specifications for
the relevant instruction, and set the correct operand
data.
• Set the PLC Setup to not stop operation for an instruc-
tion error.
Indirect DM Addressing BCD Error
(A295.09 turns ON)
The operand of indirect DM Area addressing in BCD
Mode did not contain a BCD value when the instruc-
tion was executed, and the AER Flag was turned ON.
(Only when the Stop CPU on Instruction Error
parameter in the PLC Setup is set to Stop.)
• Refer to A298 and A299 (instruction program address
when the program fails), and correctly set the content
for the indirectly addressed DM operand (BCD mode)
to BCD or change the specified destination. Alterna-
tively, change the indirect addressing to binary mode.
• Set the PLC Setup to not stop operation for an instruc-
tion error.
Illegal Area Access Error (A295.10 turns ON)
The AER flag is ON because an illegal area was
specified for access when executing the instruction.
(Only when the Stop CPU on Instruction Error
parameter in the PLC Setup is set to Stop.)
The following operations are considered illegal
access:
• Reading/writing the parameter area
• Writing to an area without memory installed
• Writing to a write-protected area
• Indirect DM addressing BCD error
• Refer to A298 and A299 (instruction program address
when the program fails) and take corrective actions so
that illegal area access errors will not occur.
• Set the PLC Setup to not stop operation for an instruc-
tion error.
No END Error (A295.11 turns ON)
This error occurs when there is not an END instruc-
tion in the program.
Insert an END instruction at the end of the program allo-
cated to the task stored in A294 (task number when the
program fails).
Task Error (A295.12 turns ON)
There is no specified interrupt task when an interrupt
is generated (input interrupt, high-speed counter
interrupt or scheduled interrupt.)
Create a task for the number stored in A294 (task number
when the program fails).
Differentiation Overflow Error
(A295.13 turns ON)
Differentiation instructions were repeatedly inserted
or deleted using the online editor and the system
restriction was exceeded.
Change the operating mode to PROGRAM mode and
then return to MONITOR mode.
Illegal Instruction Errors (A295.14 turns ON)
Execution of an unexecutable instruction was
attempted.
Transfer the program again using the CX-Programmer.
UM Overflow Error (A295.15 turns ON)
An attempt was made to execute a program that
exceeds the user program capacity.
Transfer the program again using the CX-Programmer.