Mitsubishi Electric MELSEC iQ-R Series User Manual page 133

Error code Error details and causes
*1
F70BH No response has been returned after
send operation.
*1
F70CH Cable failure or network module
hardware failure has occurred.
*1
F70EH Cable failure or network module
hardware failure has occurred.
F710H to F712H An error was detected in the network
module.
F781H The target network number specified
for transient transmission is out of
range.
F782H The target station number specified for
transient transmission is out of range.
F783H The request data size of transient
transmission is out of range.
F7C1H The channel used at the own station is
used by another instruction.
F7C2H The target station storage channel is
used by another instruction.
F7C3H The instruction was not completed
within the arrival monitoring time.
F7C4H The instruction is not completed
although the number of resends is
reached.
Action
Wait until 'Baton pass error status of own station' (SB0047) and 'Data link
error status of own station' (SB0049) go back to normal.
• If a communication error occurs, correct the communication cable.
• If no communication error has occurred, the error is caused by hardware
failure. Please consult your local Mitsubishi representative.
• If a communication error occurs, correct the communication cable.
• If no communication error has occurred, the error is caused by hardware
failure. Please consult your local Mitsubishi representative.
Please consult your local Mitsubishi representative.
• Correct the target network number at the own station, and retry the
operation.
• If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
• Correct the target station number at the own station, and retry the
operation.
• If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
• Correct the request command at the request source, and retry the
operation.
• If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
• Change the channel number or retry the instruction after a while.
• Check the channel interlock.
• Change the channels used by own station or the target station storage
channel in the control data.
• Retry the SEND instruction after a while.
• Check whether the target station has executed the instruction by using
the target channel or the RECV processing has been executed.
• Check whether a station other than the own station has executed the
SEND instruction for the target channel of the target station.
• If this error occurs in the ZNRD/ZNWR instruction, check whether the
version of the CPU module of another station being accessed is AY
(manufactured in July 1995) or later when the module is A2UCPU(S1),
A3UCPU, or A4UCPU, or is CP (manufactured in July 1995) or later
when the module is A2USCPU(S1).
• If this error occurs in the RECV instruction and another station is
executing the SEND instruction, specify a large value for the arrival
monitoring time. Or, activate the RECV instruction by turning on the
RECV execution request flag.
• If this error occurs by an instruction other than the RECV instruction,
specify a large value for the arrival monitoring time, or check the target
station operating status, network status, and relay station status (if the
instruction is sent to another network).
• If this error occurs in the RRUN/RSTOP/RTMRD/RTMWR instruction
and the CPU module of another station being accessed is QnACPU,
change the instruction to the REQ instruction supporting QnACPU.
• When the dynamic routing function is used, check if communication to
the target network number is possible using the MELSECNET
diagnostics communication test.
• Check that the data length is within the range of the size that can be
used for the CPU module of another station being accessed.
If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
• Increase the value of the arrival monitoring time.
• Check the target station operating status, network status, and relay
station status (if the instruction is sent to another network).
• If this error occurs in the RRUN/RSTOP/RTMRD/RTMWR instruction
and the CPU module of another station being accessed is QnACPU,
change the instruction to the REQ instruction supporting QnACPU.
• Check that the data length is within the range of the size that can be
used for the CPU module of another station being accessed.
If the error occurs again even after taking the above, please consult your
local Mitsubishi representative.
Detailed
Information
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4 TROUBLESHOOTING
131
4.5 List of Error Codes
4