Mitsubishi Electric MELSEC iQ-R Series User Manual page 623

Error Error name
code
4A20H IP communication test
error
4A21H IP communication test
error
4A22H IP communication test
error
4A23H IP communication test
error
4A24H IP communication test
error
4A25H IP communication test
error
4A27H IP communication test
error
Error details and cause
• The upper 2 bytes 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 upper 2 bytes 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 upper 2 bytes of the IP addresses do not
match between the CC-Link IE modules on the
same path that IP packets travel.
• The upper 2 bytes 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 3rd byte (Network No.) or 4th byte (Station
No.) of the IP address of the CPU module is the
number that is not available for CC-Link IE.
• The 3rd byte (Network No.) or 4th byte (Station
No.) of the IP address of the request destination
device is the number that is not available for CC-
Link IE.
• 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.
• The CC-Link IE 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 the network module that does not
support the IP packet transfer function.
• The 3rd byte (Network No.) of the IP address of
the device on the path that IP packets travel is
overlapping with the network No. of the module
connected to the CPU module and does not
support the IP packet transfer function.
• The 3rd byte (Network No.) of the IP address of
the request destination device is overlapping with
the network No. of the module connected to the
CPU module and does not support the IP packet
transfer function.
• The IP packet transfer setting is not set.
• Routing parameters are set so that IP packets
are routed to the CPU module where IP packet
transfer setting is not set.
• 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.
Action
• 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.
• Check and correct the IP address settings of the CPU
module.
• Check and correct the IP address of the request destination
device.
• Set the IP address to the CC-Link IE module used as a
master station.
• Check the communication status with the master station
when the CC-Link IE module is used as a local station.
• Replace the CC-Link IE module (master 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.
• Replace the CC-Link IE module with the one supporting the
IP packet transfer function.
• Correct routing parameter so that IP packets are routed to
the CC-Link IE module that supports the IP packet transfer
function.
• Check and correct the setting so that the 3rd byte (Network
No.) of the IP address of the device on the path that IP
packets travel does not overlap with the network No. of the
module connected to the CPU module and does not support
the IP packet transfer function.
• Check and correct the setting so that the 3rd byte (Network
No.) of the IP address of the request destination device does
not overlap with the network No. of the module connected to
the CPU module and does not support the IP packet transfer
function.
• Check and correct the IP address of the request destination
device.
• Select "Use" for the IP packet transfer function setting in the
CPU parameters.
• Correct routing parameters so that IP packets are routed to
the CPU module where IP packet transfer setting is set.
• Check and correct the IP address of the request destination
device.
• 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.
36 ERROR CODES
36.4 List of Error Codes
36
621