Omron CS1G/H-CPUxx-EV1 Programming Manual page 105

Checking Programs
Program error
No END Instruction
Error During Task Execution
Instruction Processing Error (ER Flag
ON) and Stop Operation set for Instruc-
tion Errors in PLC Setup
Illegal Access Error (AER Flag ON) and
Stop Operation set for Instruction
Errors in PLC Setup
Indirect DM/EM BCD Error and Stop
Operation set for Instruction Errors in
PLC Setup
Differentiation Address Overflow Error
UM (User Memory) Overflow Error
Illegal Instruction Error
Description
An END instruction is not present in the
program.
No task is ready in the cycle.
No program is allocated to a task.
The corresponding interrupt task num-
ber is not present even though the exe-
cution condition for the interrupt task
was met.
The wrong data values were provided
in the operand when an attempt was
made to execute an instruction.
A read or write was executed for a
parameter area.
A write was executed in a memory area
that is not mounted (see note).
A write was executed in an EM area
specified as EM File Memory.
A write was executed in a read-only
area.
The value specified in an indirect DM/
EM address in BCD mode was not
BCD.
The value specified in an indirect DM/
EM address in BCD mode is not BCD.
During online editing, more than
131,071 differentiated instructions have
been inserted or deleted.
An attempt was made to execute
instruction data stored beyond the last
address in user memory (UM) defined
as program storage area.
An attempt was made to execute an
instruction that cannot be executed.
Section 2-3
Related flags
The No END Flag (A29511) turns ON.
The Task Error Flag (29512) turns ON.
The ER Flag turns ON and the Instruc-
tion Processing Error Flag (A29508)
turns ON if Stop Operation set for
Instruction Errors in PLC Setup.
AER Flag turns ON and the Illegal
Access Error Flag (A29510) turns ON if
Stop Operation set for Instruction
Errors in PLC Setup
AER Flag turns ON and the DM/EM
Indirect BCD Error Flag (A29509) turns
ON if Stop Operation set for Instruction
Errors in PLC Setup
The Differentiation Overflow Error Flag
(A29513) turns ON.
The UM (User Memory) Overflow Flag
(A29516) turns ON.
The Illegal Instruction Flag (A29514)
turns ON.
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