Mitsubishi Melsec-L Series User Manual page 289

Error code
Error
(Hexa-
decimal)
Monitor data write
7144
H
error
Monitor PC No.
7145
H
error
Monitor CPU model
7146
H
name error
Written number of
7147 monitoring points
H
overrun error
Extension R block
7148
H
No. error
7149 System error
H
Cannot execute a
714A command during
H
RUN
714B
H
System error
714C
H
Unusable command
714D
H
error
Monitor network No.
714E
H
error
7150 System error
H
PC No. designation
7151
H
error
7152 System error
H
7153 Frame length error
H
7154 System error
H
Unwritten monitor
7155
H
data error
7156 System error
H
Programmable
7160
controller access
H
error
7161
H
to System error
7163
H
15 - 20
Description
• Monitoring was requested before the
device to be monitored was written.
• The written PC No. and PC No. in the
monitor request are different.
• The written CPU model name and the
CPU monitor name in the monitor
request are different.
• The written number of monitoring points
exceeds the designated range.
• A nonexistent extension file register
block No. was designated.
• A block No. being used as an extension
comment area, sampling trace area, or
status latch area was designated.
• The OS of the C24 detected some
error.
• A write command was designated when
disable online change was set.
• Parameter or sequence program was
written during RUN.
• The OS of the C24 detected some
error.
• An unusable command is issued to the
access target CPU module.
• The written monitor network No. and the
monitor request network No. are
different.
• The OS of the C24 detected some
error.
• A PC No. other than "FF" or "0 to 120
(00 to 78 )" was designated.
H H
• The OS of the C24 detected some
error.
• The request exceeded the limit of the
processing points that are
predetermined for each command
and allowed for one transmission.
• The OS of the C24 detected some
error.
• Monitoring was requested before
monitor data was written.
• The OS of the C24 detected some
error.
• CPU model name cannot be confirmed.
• The OS of the C24 detected some
error.
Signal
Corrective action
name
• Write the device to be monitored before
PRO.
issuing a monitor request.
• Check the transmit message from the
C/N
external device, correct it, and restart
data communications.
C/N
• Rewrite the monitor data.
• Check and correct the external device
PRO. transmit message and restart data
communications.
• Check and correct the designated block
PRO.
No. and restart data communications.
⎯
( 1)
• Change the setting to enable online
change and restart data
C/N communications.
• Stop the CPU module and restart data
communications
⎯
( 1)
• Check and correct the external device
transmit message and restart data
communications.
• If no error is found in the command,
C/N
clear the programmable controller CPU
information and retry. (Refer to Section
15.5.)
• Check and correct the other station
access valid module No. in the network
C/N parameters, and restart data
communications.
• Rewrite the monitor data.
⎯
( 1)
• Check and correct the external device
C/N transmit message and restart data
communications.
⎯
( 1)
• Modify the setting of the transmit
message from the external device so
that the request will not exceed the limit
CHn
of the processing points that are
ERR.
allowed for one transmission and
predetermined for each MC protocol
command. Then, retry communications.
⎯
( 1)
• Write the device to be monitored before
PRO.
issuing a monitor request.
⎯
( 1)
• If there is an error in the CPU module,
C/N
remove the CPU module error and
restart data communications.
⎯
( 1)
15 TROUBLESHOOTING
Protocol
Non- Bi-
Pre-
proce- direc-
MC
defined
dural tional
15 - 20