Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual page 323

Error Error details and causes
code
C403H Multiple dedicated instructions was executed
simultaneously.
C404H The protocol being executed by the ECPRTCL instruction
was canceled.
C405H The protocol number specified by the ECPRTCL
instruction is incorrect.
C406H The continuous protocol execution count of the
ECPRTCL instruction is incorrect.
C407H The connection number specified by the ECPRTCL
instruction is incorrect.
C408H An error has occurred when the send processing of the
predefined protocol using the ECPRTCL instruction was
performed.
C410H Receive waiting time of the ECPRTCL instruction timed
out.
C412H The data which cannot be converted from ASCII to binary
code was received.
C413H The number of digits of the received data using the
predefined protocol is not sufficient.
C414H The number of digits of the received data using the
predefined protocol is incorrect.
C417H The data length or data quantity of the received data
using the predefined protocol is out of range.
C420H Protocol setting data write has failed.
C421H Writing was requested to the module whose flash ROM
write count had exceeded the limit.
C430H Protocol setting data was written during the ECPRTCL
instruction execution.
Action
• Do not execute the dedicated instructions which do not
support simultaneous execution.
• Correct the specified connection number and execute
the dedicated instruction again.
Check the canceled protocol in the control data of the
ECPRTCL instruction (execution count result) and
eliminate the cause of the cancellation.
Correct the specified protocol number.
Correct the continuous protocol execution count.
• Correct the specified connection number and execute
the protocol again.
• Correct the specified connection number in "External
Device Configuration" under "Basic Settings" of the
Ethernet-equipped module and execute the protocol
again.
• Check the operation of the external device or switching
hub.
• Since there may be congestion of packets on the line,
send data after a certain period of time.
• Check if the connection cable is disconnected.
• Check that there is no connection failure with the
switching hub.
• Execute the communication status test, and if the test
was completed with an error, take the corrective action.
• Execute the module communication test, and check
that there is no failure in the module.
• Check if the cable is disconnected.
• Correct the specified connection number in "External
Device Configuration" under "Basic Settings" of the
Ethernet-equipped module and execute the protocol
again.
• Check that there is no error in the external device.
• Check that the sending from the external device is not
interrupted.
• Check that there is no data lost due to a receive error.
• Check that there is no error in the data (packet) sent by
the external device.
• Check that there is no data lost due to a receive error.
• Check that there is no error in the data (packet) sent by
the external device.
• Check that there is no data lost due to a receive error.
• Check that there is no error in the data (packet) sent by
the external device.
• Check that there is no data lost due to a receive error.
• Check that there is no error in the data (packet) sent by
the external device.
• Check the maximum allowable data length and specify
the maximum length or less in the data length storage
area.
• Check the maximum allowable data quantity, and
specify the maximum quantity or less in the data
quantity storage area.
• Write the data again.
• If the error occurs again even after taking the above,
the possible cause is a hardware failure of the
specified module. Please consult your local Mitsubishi
representative.
Replace the module because the number of writes
exceeded the limit.
Do not write the protocol setting data during the
ECPRTCL instruction execution.
Detailed information
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3 TROUBLESHOOTING
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3.5 List of Error Codes
3