Mitsubishi Electric Melsec QJ71LP21 Reference Manual page 427

8 TROUBLESHOOTING
Error No.
F7C3 Arrival monitoring timeout
F7C4 Resend count-out
F7C5 SEND instruction target station error
F7C6 Channel number setting out of range
Target station specification error
F7C7
(host station specification)
F7C8 Execution type specification error
F7C9 Resend count setting out of range
F7CA Arrival monitoring time setting out of range
Sent data length setting out of range
F7CB
(SEND instruction)
F7CD System error
F7E1 Control data error
F7E2 System error
F7E3 System error
F7E4 Target CPU module type error
F7E5 Post-transmission event wait timer time-out
F7E7 Buffer memory address error
F7E8 Network type error
F7E9 Instruction not executable error
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Table 8.1 Error code list (continued)
Description of error
<When this error occurs by the ZNRD/ZNWR instruction>
When a CPU module on another station to be accessed is an A2UCPU(S1),
A3UCPU, A4UCPU, A2ASCPU(S1), or A2USCPU(S1), use the CPU module
with the following version or later.
• A2UCPU(S1), A3UCPU, A4UCPU: Version AY (manufactured since July,
1995) or later
• A2ASCPU(S1), A2USCPU(S1): Version CP (manufactured since July, 1995)
or later
<When this error occurs by the RECV instruction>
When another station is executing the SEND instruction, increase the value of
the arrival monitoring time.
Alternatively, start the RECV instruction by turning the RECV instruction
execution request flag to ON.
<When this error occurs in other cases>
Increase the value of the arrival monitoring time.
Confirm the operation status of the target station, the network status, and the
relay station status (in the case of sending to other network).
Increase the arrival monitoring time.
Re-execute the REMFR/REMTO instruction.
Confirm the operation status of the target station, the network status, and the
relay station status (in the case of sending to other network).
Review the target network number and target station No. in the request control
data of send/receive instructions.
Set the channel numbers of the host station and of the target station in the
request control data of send/receive instructions within a range between 1 and
64.
Specify the target station number in the request control data of send/receive
instructions to other than the number of host station.
When the execution/abnormal completion type in the request control data of
send/receive instructions is specified for all stations or groups, set "No arrival
confirmation" for the execution type.
Set the resent count of the request control data of send/receive instructions
within a range between 0 and 15 (times).
Set the arrival monitoring time of the request control data of send/receive
instructions within a range between 0 and 32767 (seconds).
Set the sent data length of the request control data of the SEND instruction
within a range between 1 and 960 (words).
The hardware of the network module is faulty.
Please consult your local Mitsubishi representative.
Confirm the set values (mode, etc.) in the control data of a dedicated
instruction.
The hardware of the network module is faulty.
Please consult your local Mitsubishi representative.
Check if the CPU module model of the target station specified in the WRITE,
READ, REQ, RRUN, RSTOP, RTMRD, and RTMWR instructions is out of
applicable range.
Re-execute the REMFR or REMTO instruction after a little while.
Confirm the operation status of the target station, the network status, and the
relay station status (in the case of sending to other network).
Check if the buffer memory address specified in the REMFR and REMTO
instructions exceeds 8000 .
H
Check if the network number specified in the REMFR and REMTO instructions
represents a PLC to PLC network.
Check if the host station is data-linked when the REMFR or REMTO instruction
is executed.
MELSEC-Q
Corrective measure
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