Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 781

Error Error name Error details and cause
code
4902H Any other error • The communications have stopped because an error
occurred in another simple CPU communication function
setting No. for which the same communication destination is
specified in the simple CPU communication function.
4905H Any other error • The capacity of label area used exceeded its limit.
4906H Any other error The file register data cannot be cleared by either of the
following reasons:
• The QDRSET instruction was executed more than once
after the CPU module was powered on or reset.
• The file register setting parameter is set to the one other
than "Use Common File Register in All Programs".
4907H Any other error • The target CPU module does not support "Access from
External Device" of "Global Label Setting".
4A00H Network error • 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 byte of the IP address (network number) specified
for the IP communication test is the same as that of the CPU
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.
4A01H Network error • 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.
4A02H Network error • Access to the specified station cannot be made.
4A03H Network error • A request for network test was issued.
4A20H IP • The upper 2 bytes of the IP addresses do not match
communication between the CPU module and the request destination
test error 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.
4A21H IP • The 3rd byte (Network No.) or 4th byte (Station No.) of the IP
communication address of the CPU module is the number that is not
test error 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.
4A22H IP • The IP address is not set to the CC-Link IE module on the
communication path that IP packets travel.
test error
Action
• Eliminate the error cause of the simple CPU communication
setting No. with an error.
• Check the program, delete the unused local and global label
definitions, compile the program, and then write the program
to the programmable controller.
• Change the label area size in parameter, compile the
program, and then write the program to the programmable
controller.
• If the QDRSET instruction is being executed, power on or
reset the CPU module.
• The operation cannot be performed if the file register setting
parameter is not set to "Use Common File Register in All
Programs".
• Disable "Access from External Device", and then write the
data to the programmable controller again.
• 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 byte of the IP address (network
number) specified for the IP communication test with that of
the CPU 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.
• 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.
Appendix 1 Error Codes
A
APPX
779