Mitsubishi Electric MELSEC iQ-R C R12CCPU-V, User Manual

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180
APPX
Appendix 1 Error Code List
Operation when an error occurs
There are two types of errors: stop errors and continuation errors.
Stop error
In a C Controller module, if a stop error occurs, the output (Y) from a user program and writing to buffer memory are disabled.
The communication with a CPU module can be performed even after the stop error occurs in the CPU module. The external
output of each module is controlled in accordance with the output mode setting in error. (

Page 65 Operation setting when
an error is detected) Besides, if the stop error occurs in a multiple CPU system configuration, the stop error target CPU
module (all CPU modules or only the relevant CPU module) can be set in the parameter. (

Page 150 Stop setting)
Continuation error
If a continuation error occurs, the CPU module retains the operation and continues processing.
How to clear errors
Only continuation errors can be cleared. (

Page 66 Error clear function)
Error code list
The following table shows the error codes detected by the self-diagnostic function.
Self-diagnostic error codes for CPU module (1000H to 3FFFH)
Error
code Error name Error details and cause Corrective action Detailed
informati
on Diagnosti
c timing
1000H Power
interruption • A momentary power failure has
occurred.
• The power supply has been shut OFF.
Check the power supply status.

Always
1080H ROM write
count error The number of writes to the FlashROM
(data memory, program memory, and
system memory) exceeded 100000 times.
(Number of writes > 100000) Replace the CPU module. Frequency
information At power
ON, RESET,
or write
1100H Memory card
access error Data cannot be written to the memory card
because the write protect switch is in the
locked position. Set the write protect switch of the memory card in
the unlocked position.

Always
1120H SNTP clock
setting error Time setting has failed when the
programmable controller is powered ON or
reset. • Check if the setting of time setting function is
correct.
• Check if the specified SNTP server is operating
normally and there is no failure on the network
accessing the SNTP server computer.
 At power
ON or
RESET
112EH Connection
establishment
failed A connection could not be established in
the open processing. • Check the operation of the target device.
• Check if the open processing has been performed
in the target device.
• Review the port number of the module, IP
address/port number of the target device, opening
method, and the number of connections.
• When the firewall is set in the target device, check
if the access is permitted.
• Check if the Ethernet cable is disconnected.

Always
1165H UDP/IP send
failed Data was not sent correctly with UDP/IP. • Check the settings for connection with the target
device.
• Check the operation of the target 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.

Always