Mitsubishi Electric GT16 User Manual page 405

Error
Error message
code
Same sta. on GOT & project
424 data. Review communication
parameter.
A duplicate IP address has been
425
detected. Confirm the setting.
PLC cannot handle as
448
requested. Correct devices.
Dedicated device is out of range.
449
Confirm device range.
Path has changed or timeout
450
occurred in redundant system.
Q redundant system settings and
451
current config. do not match.
460 Communication unit error
Communication channel not set.
480
Set channel number on Utility.
Communication unit not
486 corresponded to set
communication driver.
Please turn on the PLC and the
487
GOT again.
Inactive channel has been
489 selected at Communication
Settings.
Warning! Built-in battery voltage
500
is low.
The station number set in the GOT's utility is the same as the station
number set in the Ethernet setting of GT Designer3 or GT Designer2 (the
station number of the PLC side Ethernet module) or in the project data.
Check the following contents so that the multiple station numbers
should not be the same.
• Check the GOT's station number in the GOT's utility.
• Check the station number set in the project data.
• Check the station number set in the Ethernet setting.
(Set the station number so that it becomes the same as the station
number of the PLC side Ethernet module set in the parameter setting
of GX Developer.)
• When using the station No. switching function, check the data of the
switching station No. device.
The IP address of the GOT is the same as that of the controller.
Change the IP address of the GOT or the controller.
A device outside the range of PLC file registers and the buffer memory
was specified.
Correct the monitor device by setting file register of the PLC CPU.
Set the address for the special function module in the GOT monitor
available range.
Set the device in the GOT monitor available range.
The path has been switched or timeout occurred in the redundant
system.
• Check the PLC CPU to know if the path has been switched.
• Check the cable connection status and the PLC CPU status.
• This error may occur when the load of the PLC CPU becomes
heavier when accessing other stations. In such a case, transfer the
data of the other stations to the host station PLC CPU and monitor
them at the host.
• Perform one of the following operations if the PLC scanning time is
long: COM instruction/Extension of END processing/Setting of the
number of processing times for general data/Data update batch
processing.
Change the Q redundant setting in accordance with the actual Q
redundant CPU system.
• Reset the power of the GOT.
• Replace the unit.
Channel (CH.No.1 to 4) to communicate with a controller is not set.
• After setting the Communication Settings on the GT Designer3,
download it to the GOT.
• Change the channel assignment in the Communication Setting on
the utility.
The communication driver set in the Communication Setting and the
communication built into the GOT do not match.
• Check whether the communication driver set in the Communication
Setting is correct.
Turn the power of the PLC and GOT on again.
Inactive channel No. has been set in the project data.
• Check whether any unnecessary channel No. has been set in the
project data.
• Check whether channel Nos. set in the project data are set in the
Communication Settings.
The voltage of the GOT built-in battery is decreased.
Replace the GOT built-in battery.
19.2 Error Message and System Alarm
Action
19. TROUBLESHOOTING
17
Channel No.
storage
18
19
*1
*1
*1
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