8. TROUBLESHOOTING
MELSEC-A
8-9
(4) Variable
access
(a) Common
Class Code
Cause
ACCESS (6)
E_ACCESS_OBJ_ACCESS_
UNSUPP (6)
•
A data length was exceeded 128 bytes.
E_ACCESS_NAME_ACCESS_
UNSUPP (9)
•
A variable name was specified even though
variable name access is not supported.
E_ACCESS_OBJ_NON_EXIST (7)
•
An undefined object was specified.
•
An access mode other than index or name
was specified.
E_ACCESS_OBJ_ACCESS_
DENIED (3)
•
The specified subindex exceeds the number
of array variable elements.
E_ACCESS_OBJ_INVALIDATED
(1)
•
An error occurred in the PC CPU.
Service (5)
E_SERV_ILLIGAL_PARAM (5)
•
Incorrect device information was set in the
variable information.
OD (7)
E_OD_OVERFLOW (2)
•
An undefined OD was specified (a value that
exceeds the maximum index value registered
in the specified index).
(b) Write
Class Code
Cause
ACCESS (6)
E_ACCESS_OBJ_ACCESS_
DENIED (3)
•
The write data length and the data length of
the object to be written do not match.