Mitsubishi Electric Q81BD-J61BT11 User Manual page 232

15 ERROR CODE
Error code
Error description
(hexadecimal)
Transient
B407 communication number
mismatch error
Sending channel in use
B510
(own station)
Receiving channel in
B511
use
B512 Arrival wait timeout
Number of retries
B513
exceeded
B515 Channel number error
B519 Resend count error
B51A Arrival monitor time error
Target station number
B520
error
B524 Target station CPU error The target station's CPU is faulty.
Access code setting
B601
error
Transient request
B602
overload error
Transient request
B603
overload error
B604 Line test in progress
Cannot access the
B605
communication buffer.
B607 Target station CPU error
Transient request
B771
overload error
15 - 4
Cause of error (details)
The numbers for request data and
response data do not match.
The selected channel is already in use.
The channel of the target station is
already in use.
The arrival monitor time has exceeded
(when the resend count is 0) or the
mdReceive instruction was executed
when the mdReceive instruction
execution request flag was not turned
on.
The number of retries exceeded the
set number.
A channel number is out of the setting
range.
The number of resends is out of the
setting range.
The arrival monitor time is out of the
setting range.
"Other than 0" is set for the target
station number.
Nonexistent access code/attribute was
set.
There are too many transient requests
to the corresponding station.
There are too many transient requests
to the corresponding station.
A transient transmission was
performed while a line test was in
progress.
Access to the communication buffer
failed.
There is an error in the target station's
CPU.
There are too many transient requests
to the corresponding station (when the
requesting station is the AJ65BT-G4,
A8GT-J61BT13 or CC-Link Ver.2
board).
Corrective action
Check the line.
The same channel cannot be
used at the same time. Change
the channel number or try not to
use the same channel at the
same time.
Execute the mdSend instruction
after a while. Check to see if
more than one request is made
to the channel of the target
station from own station and/or
multiple stations.
Increase the arrival monitor time
if this error occurred in the
mdReceive instruction and when
another station was executing
the SEND instruction (mdSend
instruction in case of the CC-Link
Ver.2 board).
Increase the arrival monitor time
when own station was executing
an instruction.
If the error persists, check the
network and target station.
Increase the arrival monitor time.
If the error persists, check the
network and target station.
Set the channel of own station
and target station to "1 or 2."
Set a value in the range from "0
to 15 (times)."
Set a value in the range from "0
to 32767 (seconds)."
Set the target station number to
"0."
Check the target station's CPU.
Set the correct access
code/attribute.
Wait a while and then send the
requests (transient transmission
overload status).
Wait a while and then send the
requests (transient transmission
overload status).
Wait a while and then resend.
Wait a while and then resend.
Check the target CPU.
Wait a while and then resend
(transient transmission
overloaded status).
MELSEC
Detectability
Master Local
station station
15 - 4