Mitsubishi Electric MELSEC iQ-R Series User Manual page 127

Error code Error name
4A00H Network error
4A01H Network error
4A02H Network error
4A03H Network error
4A20H IP communication test error
4A22H IP communication test error
4A23H IP communication test error
Error details and cause
• Access to the specified station cannot be made
since the routing parameters are not set to the
start source CPU module and/or relay CPU
module.
• For routing via a multiple CPU system, the control
CPU of the network module for data routing has
not started.
• The third octet of the IP address (network number)
specified for the IP communication test is the
same as that of the remote head module where
the test is executed.
• The CPU module that performs IP packet transfer
is not the control CPU of the CC-Link IE module,
which is on the path that IP packets travel.
• The network of the number set to the routing
parameters does not exist.
• The specified CPU module cannot be
communicated through the network that is not
supported by the CPU module.
Access to the specified station cannot be made.
A request for network test was issued.
• The first octet and second octet of the IP
addresses do not match between the CPU module
and the request destination device on the same
path that IP packets travel.
• The first octet and second octet of the IP
addresses do not match between the CPU module
and the CC-Link IE module on the same path that
IP packets travel.
• The first octet and second octet of the IP
addresses do not match between the CC-Link IE
modules on the same path that IP packets travel.
• The first octet and second octet of the IP
addresses do not match between the request
source device and the CPU module connected to
the request destination device by Ethernet.
The IP address is not set to the CC-Link IE module
on the path that IP packets travel.
• The CPU module on the path that IP packets
travel does not support the IP packet transfer
function.
• Routing parameters are set so that IP packets are
routed to CPU modules that are incompatible with
IP packet transfer.
Action
• Set to the related stations the routing parameters
for access to the specified station.
• Retry after a while. Or, start communication after
checking that the system for data routing has
started.
• Do not use the same third octet of the IP address
(network number) specified for the IP
communication test with that of the remote head
module where the test is executed.
• Set the CPU module that performs IP packet
transfer as the control CPU of the CC-Link IE
module, which is on the path that IP packets
travel.
• Check and correct the routing parameters set to
the related stations.
• Set communication through the network that is
supported by the specified CPU module.
• Check the network module for error, or check that
the modules are not in offline.
• Check if the network numbers/PC numbers are
correctly set.
Check the request of the SLMP/MC protocol.
• Check and correct the IP address settings of the
CPU module.
• Check and correct the IP address of the request
destination device.
• Check and correct the IP address of the CC-Link
IE module.
• Check and correct the IP address of the request
source device.
• Set the IP address to the CC-Link IE module used
as a master station or control station.
• Check the communication status with the master
station or control station when the CC-Link IE
module is used as a local station or normal station.
• Replace the CC-Link IE module (master station or
control station) with the one that supports the IP
packet transfer function.
• Conduct the IP communication test again after the
CC-Link IE module is started up.
• Check and correct the IP address of the request
destination device.
• Replace the CPU module with the one supporting
the IP packet transfer function.
• Correct routing parameter so that IP packets are
routed to the CPU module that supports the IP
packet transfer function.
• Check and correct the IP address of the request
destination device.
4 TROUBLESHOOTING
4.7 Error Codes
4
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