Mitsubishi Electric MELSEC iQ-R Series User Manual page 194

Error Error definition and causes
code
D24BH The number of resends specified in the
dedicated instruction is incorrect.
D24CH The network number specification of the
dedicated instruction is incorrect.
D24DH The channel specified in the dedicated
instruction is incorrect.
D251H At execution of a dedicated instruction, or
group specification or all stations
specification of the target station, the
execution type is set with arrival check.
D253H A response timeout has occurred when
the dedicated instruction was executed.
4 TROUBLESHOOTING
192
4.5 List of Error Codes
Action
• Execute the instruction again after correcting the number of resends at
the request source of the dedicated instruction.
• When the own station, target station, or relay station detected an error,
identify the cause of the error and take action.
• Execute the instruction again after lowering the transient transmission
usage frequency.
• Check if the switching hub and the Ethernet cables at the request source
are connected properly.
• Execute the instruction again after correcting the network number at the
request source of the dedicated instruction.
• When the request source is other network, check if "Routing Setting" of
the CPU parameter is correctly set and take corrective actions.
Execute the instruction again after correcting the channel number used by
the own station in the control data.
• Execute it again after changing the execution type in the control data to no
arrival check.
• If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
<When using the PLCopen Motion control FB mode>
• Check the network status using the CC-Link IE TSN/CC-Link IE Field
diagnostics of the engineering tool, and take action.
• For IP address specification, it is not possible to target stations beyond a
relay station. Execute the dedicated instruction by specifying the network
number/station number.
• Execute the instruction again after increasing the number of resends at the
request source of the dedicated instruction.
• Execute the instruction again after lower the transient transmission usage
frequency.
• When "Dynamic Routing" under "Application Settings" is set to "Enable",
check the 'Communication path determination status' (Un\G1260544 to
Un\G1260559) and check whether the communication to the target station
network No. can be performed.
• For the RECV instruction, execute it again after correcting the own station
storage channel in the control data.
• For the RECV instruction, check that 'RECV execution request flag CH1'
(SB0030) to 'RECV execution request flag CH8' (SB0037) are on.
• For the SLMPSND instruction, execute it again after checking if the
destination port number set in the control data is the available port number
using the manual of the external device.
• Correct the network number and station number/IP address of the target
station of the dedicated instruction.
• Check if the Ethernet cable is connected properly.
• For the REMFR/REMTO/REMFRD/REMTOD instruction, increase
'REMFR/REMTO instruction resend count' (SW001A) or 'REMFR/REMTO
instruction response wait timer time' (SW001B) at the request source and
try again.
• If the request destination is for another network, check if the CPU module
serving as the relay station supports the routing settings, and take
corrective actions.
• If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
Detailed
information 1
Detailed
information 2
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