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APPENDIX
Numbers in the 800
range • • •General errors
H
Error code
The ON COM GOSUB instruction is registered
803
H
twice.
Specified date and time are incorrect.
804
H
There is no clock function in the CPU.
805
H
A ZSTART instruction cannot be executed on the
807
H
specified task.
Memory cannot be reserved for the specified task.
809
H
The size has not been specified.
Cannot be executed in edit mode.
80A
H
The number of characters for the Kanji in/ out
80B
H
code is incorrect.
A CPU side error is detected with the date and
80C
H
time specification.
There is no free space of the required size in the
824
H
program area. There is no free space of the
required size in the program area and sufficient
work area is not obtained when the MSAVE
command is executed.
It is attempted to use a future expansion function.
828
H
The message port number is incorrect.
830
H
The specified message port is already defined.
831
H
The specified message port is not defined.
832
H
The message length exceeded 256 bytes.
833
H
The message length specification is incorrect.
834
H
The specified message port is not closed.
835
H
The specified message port is not open.
836
H
The specified address is out of range.
841
H
An incorrect head device number is specified
when accessing ED.
The specification of the number of bytes to
842
H
transfer is incorrect.
An incorrect number of points to be processed is
specified when accessing ED.
A task that was forced to end (pressing [Ctrl]+[C])
881
H
was aborted due to an error cause during the
processing.
Cannot be used in the specified interface.
8AE
H
There is no area where the message can be
8C3
H
written.
Time out error
8CA
H
This error is generated in the following
instructions:
ZMESSAGE GET, ZRESERVE, ZWAIT EVENT
A message, resource number, or event was not
generated within the specified time.
It is attempted to write more than 16 data to a
8CD
H
single message port.
App - 17
Meaning
Corrective action
Use only one ON COM GOSUB instruction.
Set the correct time, date, and week.
Execute using a CPU with a clock function.
Execute the instruction on a task that is stopped.
Make each task size smaller or reformat the
memory card to increase the executable program
area. Specify the size with the SET command.
Do not execute the instruction in question on a task
whose start condition is OFF in debug mode.
Use the correct number of characters.
Check the CPU.
Specify the size for each task correctly.
This function cannot be used.
Specify the correct message number.
Since it is already defined, it is not necessary to
define the message port anew.
Use the port after defining it.
Decrease the message length to 256 bytes or less.
Specify the length correctly.
Close the message port.
Open the message port.
Specify an address within the range.
Specify the correct head device number.
Specify the correct number of bytes to transfer.
Specify the correct number of points to be
processed.
Check whether or not there are places where the
program might be forcibly stopped in the program.
Modify the program so that the [Ctrl]+[C] keys
cannot be pressed.
Change the interface.
Increase the message area or delete excess
messages.
Check the status of the message port, resource
number, or event that might cause this error.
Decrease the number of messages to be written.
MELSEC-Q
App - 17
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