Mitsubishi 00JCPU User Manual page 321

(7) Error codes during communication with the serial communication function
Table6.45 shows the error codes, error description, and corrective actions sent from the CPU module to the
external device when an error occurs during communication with the serial communication function.
Table6.45 Error codes sent from the CPU module to external device
Error code
(Hexadeci- Error item
mal)
4000
H
Error detected by the CPU module (error occurred by other
to -
than the serial communication function)
4FFF
H
Frame length The length of received message is outside the permissible
7153
H
error range.
Unregistered
7155 A monitor request was given before monitor registration.
H
monitor error
Request data
7164
The requested data or device specification method is wrong.
H
error
A write command was specified while online change is
7167
H
disabled.
Disabled during
RUN
The selected command cannot be executed in the RUN
7168
H
status.
Monitor The QnA-compatible 3C/4C frame was not used for monitor
716D
H
registration error registration.
A subcommand or a command that does not exist is
7E40
Command error
H
specified.
The number of points specified for random write/ read
7E41 Data length error
H
exceeds the number of points enabled for communication.
The requested number of points exceeds the range of the
7E42
Data count error
H
command.
The device specified does not exist.
7E43 Device error The device specified cannot be specified by the
H
corresponding command.
Continuous The next request was received before the response message
7E47
H
request error was returned.
Number of
7E4F device points The number of access points is incorrect.
H
error
Request
destination
7E5F
The I/O number of the request destination module is error.
H
module I/O
number error
Number of
registration The number of registration points (word/bit) is outside the
7E64
H
points range range.
error
7F01
Buffer full error The next data was received before processing received data.
H
The command (frame) section specified is in error.
Receive header
7F21
H
section error
The ASCII code received cannot be converted into binary.
7F22 Command error The command or device specified does not exist.
H
MC protocol The data (such as ETX, CR+LF) specified after the character
7F23
H
message error part does not exist or in error.
Description
CHAPTER6 FUNCTIONS
Corrective action
Refer to the QCPU User's Manual (Hardware Design,
Maintenance and Inspection), and take corrective action.
Review the sent message.
Modify the message so that the number of access points
may be within the permissible range.
Give a monitor request after registering a device to be
monitored..
Check the sent message/requested data of the external
device, correct it, and restart communication.
• Enable the online change and restart communication.
• Set the CPU module to STOP and restart
communication.
Set the CPU module to STOP and restart
communication.
Perform the monitor registration again.
Check and correct the sent message of the external
device and restart communication.
Check and correct the sent message of the external
device and restart communication.
Check and correct the sent message of the external
device and restart communication.
Check and correct the sent message of the external
device and restart communication.
Do not give continuous requests from the external
device.
Match the monitoring time of timer 1 with the time-out
time of the external device.
Check and correct the sent message of the external
device and restart communication.
Correct the I/O number of the module to which data are
sent.
Correct the setting value of the number of registration
points (word/bit).
Increase the transmission intervals by such as
handshake with the external device.
Check and correct the sent message of the external
device and restart communication.
Check and correct the sent message of the external
device and restart communication.
Check and correct the sent message of the external
device and restart communication.
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