Omron CJ2 CPU UNIT User Manual page 368

Cj2 cpu unit hardware
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Appendices
Error
Error flag
Error
code
(Auxiliary
(inA400)
Expansion
0x80EA
A401.13: Dupli-
Rack Dupli-
cation Error
cated Rack
Flag
Number
Program Error
0x80F0
A401.09: Pro-
gram Error Flag
A-106
Flag and
word data
Area)
A409: Expan-
The same I/O word has been allo-
sion Rack
cated to more than one Basic I/O
Duplicated
Unit.
Rack Number
An Expansion Rack's starting word
address exceeds CIO 0901.The cor-
responding bit in A409.00 to A409.03
(Racks 0 to 3) will be turned ON.
A294 to A299:
The program is incorrect. See the fol-
Program Error
lowing rows of this table for details.
Information
The address at which the program
stopped will be output to A298 and
A299.
A295.11: No END error
A295.15: UM overflow error
The last address in UM (user pro-
gram memory) has been exceeded.
A295.13: Differentiation overflow
error Too many differentiated instruc-
tions have been inserted or deleted
during online editing.
A295.12: Task error
A task error has occurred. The follow-
ing conditions will generate a task
error.
1.
There is no executable cyclic
task.
2.
There is no task that corre-
sponds to the interrupt that was
input. (Only when the Stop CPU
on Instruction Error parameter in
the PLC Setup is set to Stop.)
A295.10: Illegal access error
An illegal access error has occurred
and the PLC Setup has been set to
stop operation for an instruction error.
The following are illegal access
errors:
1.
Reading/writing a parameter
area.
2.
Writing memory that is not
installed.
3.
Writing an EM bank that is EM
file memory.
4.
Writing to a read-only area.
5.
Indirect DM/EM address that is
not in BCD when BCD mode is
specified.
Indirect DM/EM BCD Error Flag
(A295.09) turned ON: An indirect
DM/EM BCD error has occurred,
causing the AER Flag to turn ON.
Also, the PLC Setup has been set to
stop operation for an instruction error.
Instruction Error Flag (A295.08)
turned ON: Incorrect data values
were provided in an operand when
an attempt was made to execute an
instruction, causing the ER Flag to
turn ON, and the PLC Setup has
been set to stop operation for an
instruction error.
A295.14: Illegal instruction error
The program contains an instruction
that cannot be executed.
Probable cause
Check allocations to Units on the rack number
whose bit is ON in A409.00 to A409.03. Correct the
allocations so that no words are allocated more than
once, including to Units on other Racks, and turn the
Rack's power supply OFF and then ON again.
Check the first word setting for the Rack indicated in
A409.00 to A409.03 and change the setting to a
valid word address below CIO 0900 with a Program-
ming Device (such as a CX-Programmer).
Check the program using A298/A299 and the error
flags to find the mistake, and correct the program.
Correct the program and then clear the error.
Be sure that there is an END(001) instruction at the
end of the task specified in A294 (program stop task
number).
Transfer the program again.
Return to PROGRAM mode and transfer the pro-
gram again.
Check the startup cyclic task attributes. Check the
execution status of each task as controlled by
TKON(820) and TKOF(821).Make sure that all of the
task numbers specified in TKON(820), TKOF(821),
and MSKS(690) instructions have corresponding
tasks. Use MSKS(690) to mask any I/O or sched-
uled interrupt tasks that are not being used and that
do not have programs set for them.
Find the program address where the error occurred
(A298/A299) and correct the instruction.
Find the program address where the error occurred
using A298/A299 and correct the indirect address-
ing (the indirect address or the word holding the indi-
rect address) or change to binary mode.
Check the Program Error Position (A298/A299) to
find the reason that the ER Flag turned ON and cor-
rect the operand data according to the descriptions
of the instructions in the Instructions Reference
Manual (Cat. No. W474).
Retransfer the program to the CPU Unit.
CJ2 CPU Unit Hardware User's Manual
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