Mitsubishi Electric MELSEC-A Series User Manual page 31

Error
Cause
code
4 Data write was
l
executed outside of
the allowed setting
range.
5 Setting of the up-
l
per/lower output
limiter or the up-
per/lower setting
limiter is invalid.
6 The set value was
l
modified during the
default setting
registration.
Remark
1) *: When the data beyond the setting range is written in the input range
area or in the alert mode area during the setting mode, the error code "4"
is stored.
When it is changed to the operation mode without resetting the error, the
error code is changed to "3".
In this case, execute the error processing for the error code "3".
2) Priorities of the errors are as follows :
When a high-priority error occurs while a low-priority error has already
occurred, the error code and the error address of the high-priority error
write over those of the low-priority error.
[Priority]
6 ← 1 ← 3 ← 5 ← 2/4
High
(Between the errors 2 and 4, the error with the lower error address has priority.)
Actions taken when an error occurs
The written data is retained as is.
l
In case of the mode select item, the operation is
l
executed using the data prlor to the write operation.
When the value exceeds the upper or lower limit in
l
temperature, time, or percentage setting, the control is
performed with the upper/lower limit value.
The address where the error occurred is stored.
l
When the write operations were executed to multiple
l
write areas, the address where the error was first de-
tected is ratained.
The written data is retained as is.
l
Allowed upper and lower values are used for the
l
control.
The address where the error occurred is stored.
l
When the write operations were executed to multiple
l
write areas, the address where the error was first de-
tected is ratained.
The written data is ignored.
l
Modification of the set value is not allowed until the
l
error is reset.
The address where the error occurred is stored.
l
When another write error occurs, the error code does
l
not change but the error address is overwritten by the
address of the new write error.
Low
A-8
Corrective action
Write data within the
l
allowed setting range.
(The error is reset when
the data within the al-
lowed setting range is
written.)
Modify the upper/lower
l
output limiter and the
upper/lower setting
limiter so that the lower
limit value is less than
the upper limit value.
Modify the set value
l
after the error reset
(Y12 : ON).