Omron SYSMAC CS Series Programming Manual page 86

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 PC Setup
Illegal Access Error (AER Flag ON) and
Stop Operation set for Instruction
Errors in PC Setup
Indirect DM/EM BCD Error and Stop
Operation set for Instruction Errors in
PC Setup
Differentiation Address Overflow Error
UM (User Memory) Overflow Error
Illegal Instruction Error
66
Note If the Error Flag or Access Error Flag turns ON, it will be treated as a program
error and it can be used to stop the CPU from running. Specify operation for
program errors in the PC Setup.
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.
Description
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 PC Setup.
AER Flag turns ON and the Illegal
Access Error Flag (A29510) turns ON if
Stop Operation set for Instruction
Errors in PC Setup
AER Flag turns ON and the DM/EM
Indirect BCD Error Flag (A29509) turns
ON if Stop Operation set for Instruction
Errors in PC 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.