Omron CJ2 - 02-2010 User Manual page 192

5 Understanding Programming
Program error
Illegal Access Error
(P_AER Flag ON) and Stop
Operation set for Instruc-
tion Errors in PLC Setup
Indirect DM/EM BCD Error
and Stop Operation set for
Instruction Errors in PLC
Setup
Differentiation Address
Overflow Error
Illegal Instruction Error
UM (User Memory) Over-
flow Error
5-102
Description
A read or write was executed for a parameter
area.
A read or write was executed for a memory
area that is not mounted.
A read or write was executed for an EM Area
Bank specified as EM File Memory.
A write was executed to 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 dif-
ferentiated instructions have been inserted or
deleted.
An attempt was made to execute an instruc-
tion that cannot be executed.
An attempt was made to execute instruction
data stored beyond the last address in user
memory (UM) defined as program storage
area.
Related flags
AER Flag turns ON and the Illegal
Access Error Flag (A295.10) turns
ON if Stop Operation set for
Instruction Errors in PLC Setup
The Access Error Flag will turn
ON. If the Stop CPU on Instruction
Error Check Box is selected in the
PLC Setup, then the Indirect
DM/EM BCD Error Flag (A295.09)
will also turn ON.
The Differentiation Overflow Error
Flag (A295.13) turns ON.
The UM (User Memory) Overflow
Flag (A295.14) turns ON.
The UM (User Memory) Overflow
Flag (A295.15) turns ON.
CJ2 CPU Unit Software User's Manual