Mitsubishi QJ71C24/-R2 User Manual page 270

10 TROUBLESHOOTING
Error code
Error
(Hexa-
decimal)
Monitoring device
7E6A read point range
H
error
7E6B
CPU abnormal
H
7E6C monitoring setting
H
value error
7E6D
H
7E6E System error
H
Modem connection
7E6F
H
error
7E70 CPU error
H
7E81
H
to
7E8E
System error
H
7EC1
H
7EC2
H
Double send
7EC3
H
request error
Transmission data
count error
7EC4 Transmission/
H
receipt buffer
setting error
Flash ROM access
7EC5
H
error
Flash ROM access
7EC6
H
error
7F00 System error
H
7F01 Buffer full error
H
7F02
H
to System error
7F06
H
ASCII BIN
7F20
H
conversion error
Receive header
7F21
H
area error
7F22 Command error
H
MC protocol
7F23
H
message error
10 - 19
Error Contents
Read point of monitoring device is out of range.
Setting value (fixed value) of CPU abnormal
monitoring is out of range.
The OS of the Q series C24 detected some error.
Modem is connected to an incorrect channel.
The communication with the CPU could not be
performed normally.
The OS of the Q series C24 detected some error.
A send request was performed while another send
request was being processed.
Data larger than the transmit buffer size was
transmitted.
Transmission/receipt buffer settings out of range.
Write to Flash ROM was requested when the setting
modification enable/disable switch in the GX
Developer was set to OFF.
There is an error in the Flash ROM read/write
request contents.
The OS of the Q series C24 detected some error.
The next data was received before processing of the
previous data was completed.
Multiple requests was simultaneously issued for one
channel.
The OS of the Q series C24 detected some error.
An ASCII code that cannot be converted to binary
code was received.
An odd number of bytes of data was received during
data communications using ASCII
conversion.
There is an error in the command (frame) part.
An ASCII code that cannot be converted to binary
code was received.
A nonexistent command or device was designated.
The remote password length is wrong.
There is no data (ETX, CR-LF, etc.) following the
character area, or designation was incorrect.
Signal
Corrective action
name
Correct the setting value of the
— read point of the monitoring
device.
—
Correct the setting value (fixed
— value) of the CPU abnormal
monitoring.
—
— ( 1)
Correct the C
—
notification is sent.
If there is an error in the CPU,
C/N
eliminate the error on the CPU
side and communicate again.
— ( 1)
Interlock (handshake) the send
requests.
Make the transmission data
count smaller than the transmit
buffer size.
Make the non procedure
protocol transmit buffer size
larger.
Designate the first address and
size of transmission/receipt
buffer in the free area range of
the user.
When writing to Flash ROM, set
switch shown left of the given
interface to ON and restart the
Q series C24.
Check the read/write request
data and designate the correct
data.
— ( 1)
Increase the transmission time
by performing handshake with
the external device, etc.
Perform handshake with the
request source external device.
— ( 1)
Check and correct the external
device transmit message and
restart data communications.
When communicating using
PRO
ASCII
BIN
always transmit the data in even
number bytes units.
Check and correct the external
device transmit message and
PRO
restart data communications.
Check and correct the external
device transmit message and
PRO
restart data communications.
Check and correct the external
device transmit message and
PRO
restart data communications.
MELSEC-Q
Protocol
Non
MC Proce-
dure
to which
H
BIN conversion,
Bidire-
ctional
10 - 19