Mitsubishi Electric MELSEC Q Series Reference Manual page 317

8 TROUBLESHOOTING
Error code
F11F Initial status (no baton addressed to host)
F120 Destination station specification error
F122 Send failure (coaxial bus system)
F221 System error
No free area in the receive buffer
F222
(buffer-full error)
F224 Receive data size error
F225 Logical channel number error
F226 Channel number error
F228 SEND instruction target station error
F301 System error
Send-target station number error
F701
(station No. 0 specified)
Send-target station number error
F702
(station No. 65 or higher number specified)
F703 Destination group number error
F706 Received data size error
F707 Number of relay stations invalid
F708 Receiving group number error
F709 Receiving network number error
F70A System error
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Table 8.1 Error code list (Continued)
Description
Check for the operation status of the control/sub-control station, faulty cables,
incorrect cable wiring, and absence of terminating resistor (in the case of the
bus). In addition, check whether the same station number has been set for two
or more stations or whether two or more control stations or remote master
stations exist.
Confirm whether network modules in MESLECNET/H and MELSECNET/10
modes exist together (confirm the control station type).
Check for faulty cables, faulty hardware, incorrect wiring, and absence of
terminating resistor (in the case of the bus). In addition, check whether the
same station number has been set for two or more stations or whether two or
more control stations or remote master stations exist.
Check for coaxial cable connection, proper connector connection, connection of
terminating resistor, or faulty cables.
The hardware of the network module is faulty.
Please consult your local Mitsubishi representative.
Retry after a little while.
If the error reoccurs as a result of a retry, review the number of transient
communication times and communication interval of the entire system.
Turn off the power supply to the entire system, and turn it on again.
The hardware of the module on the transient transmission source station is
faulty.
Please consult your local Mitsubishi representative.
The hardware of the module on the transient transmission source station is
faulty.
Please consult your local Mitsubishi representative.
Check if the logical channel number designated in the execution source of the
SEND instruction is set in the target network module.
Alternatively, specify the logical channel number set in the target network
module.
Review the target network number and target station No. in the control data at
the execution source of the SEND instruction.
The hardware of the network module is faulty.
Please consult your local Mitsubishi representative.
Review the send-target station number.
Review the destination group number.
The cable is faulty, or the hardware of the network module is faulty.
If a communication error has occurred, review the cable.
If not, the hardware of the network module is faulty.
Please consult your local Mitsubishi representative.
Set stations to which data can be sent.
Review the system.
Review the routing parameters.
Review the group number of the target station.
Review the network No. of network parameter for the host station and a target
station.
If the parameter is not set, the network No. is preset to 1 (default); so check the
network No. of other stations.
The cable is faulty, or the hardware of the network module is faulty.
If a communication error has occurred, review the cable.
If not, the hardware of the network module is faulty.
Please consult your local Mitsubishi representative.
MELSEC-Q
Corrective action
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