Mitsubishi QJ71C24N - Page 340

11 - 24 11 - 24
MELSEC-Q
11 TROUBLESHOOTING
Protocol
Error code
(Hexa-
decimal)
Error
Description
Signal
name
Corrective action
MC
Non
Proce-
dure
Bidire-
ctional
Pre-
defined
• Cannot write to Flash ROM normally. ⎯
7E57H
Flash ROM write
error
• Power is turned off during writing to
Flash ROM.
CHn
ERR.
• Re-execute the write operation.
If the error is generated again, replace
the module.
7E58H
Mode modification
error
• There was an error in the mode No. or
transmission specification designated
contents when changing the mode.
PRO
• Check and correct the contents of the
external device transmit message and
restart data communications.
• Recheck the switch setting on the Q
series C24.
• Writing to flash ROM was performed
1000 times after power-on.
⎯
• Review the program.
• Reset the Flash ROM write count
(address: 2401
H) to 0 and restart data
communications.
7E59H
Flash ROM write
count over limit error
• Writing to flash ROM was performed
100,000 times.
CHn
ERR.
• When the number of writes reached
100,000, replace the module.
7E5EH
Programmable
controller CPU
monitoring function
registration error
• The programmable controller CPU
monitoring function is registered for the
communication protocol that does not
support the function.
CHn
ERR.
• Correct the communication protocol
setting value.
7E5FH
I/O number error on
requested module
• I/O number of requested module is
incorrect.
⎯
• Correct the I/O number of the module to
which data is sent.
7E60H
Device monitoring
duplicate registration
error
• Programmable controller CPU
monitoring registration was performed
twice.
⎯
• Cancel the programmable controller
CPU monitoring and perform the
programmable controller CPU
monitoring registration again.
7E61 H
Cycle time units
range error
• Setting value of cycle time units is out of
range.
⎯
• Correct the setting value of the cycle
time units.
7E62 H
Programmable
controller CPU
monitoring function
error
• Setting value of programmable
controller CPU monitoring function is
out of range.
⎯
• Correct the setting value of the
programmable controller CPU
monitoring function.
7E63 H
Transmission
measure setting
error
• Setting of transmission measure of the
programmable controller CPU
monitoring is incorrect.
⎯
• Correct the setting value of the
transmission measure.
7E64 H
Registration point
range error
• Registration point (word/bit) is out of
range.
⎯
• Correct the setting value of the
registration point (word/byte)
7E65 H
Programmable
controller CPU
abnormal monitoring
number error
• Setting value of the programmable
controller CPU abnormal monitoring is
out of range.
⎯
• Correct the setting value of the
programmable controller CPU abnormal
monitoring.
7E66 H
Monitoring condition
error of monitoring
device
• Setting value of transmission condition
is out of range.
⎯
• Correct the setting value of the
transmission condition.
7E67 H
CPU abnormal
monitoring setting
value error
• Setting value (fixed value) of CPU
abnormal monitoring is out of range.
⎯
• Correct the setting value (fixed value) of
the CPU abnormal monitoring.
7E68H
Transmission
condition range error
of monitoring device
• Setting value of transmission condition
(condition agreement transmission) is
out of range.
⎯
• Correct the setting value of the
transmission condition (condition
agreement transmission).
7E69H
CPU abnormal
monitoring setting
value error
• Setting value (fixed value) of CPU
abnormal monitoring is out of range.
⎯
• Correct the setting value (fixed value) of
the CPU abnormal monitoring.
7E6AH
Monitoring device
read point range
error
• Read point of monitoring device is out
of range.
⎯
• Correct the setting value of the read
point of the monitoring device.
7E6BH ⎯
7E6CH ⎯
7E6DH
CPU abnormal
monitoring setting
value error
• Setting value (fixed value) of CPU
abnormal monitoring is out of range.
⎯
• Correct the setting value (fixed value) of
the CPU abnormal monitoring.
7E6EH System error
• The OS of the Q series C24 detected
some error.
⎯ (1)
7E6FH
Modem connection
error
• Modem is connected to an incorrect
channel.
⎯
• Correct the C
H to which notification is
sent.