Mitsubishi GOT1000 GT15 User Manual page 547

Error
Error message
code
Path has changed or
450 timeout occurred in
redundant system.
Q redundant system
451 settings and current
config. do not match.
460 Communication unit error
Communication channel
480 not set. Set channel
number on Utility.
Communication unit not
481 mounted to the slot of
active channel.
Too many same units are
482 mounted. Confirm the no
of units.
Simultaneous mounting of
483
the units are not allowed.
Unit mounted incorrectly.
484 Move the unit to correct
position.
Too many units mounted
485
on GOT. Reduce units.
Action
The path has been switched or timeout occurred in the
redundant system.
1. Check the PLC CPU to know if the path has been
switched.
2. Check the cable connection status, the communication
unit installation status, and the PLC CPU status.
3. 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.
4. 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.
1. Reset the power of the GOT.
2. Replace the unit.
Channel (CH.No.1 to 4) to communicate with a controller is
not set.
1. After setting the Communication Settings on the GT
Designer3 or GT Designer2, download it to the GOT.
2. Change the channel assignment in the Communication
Setting on the utility.
The interface where the channel (CH No.1 to 4) is set does
not have a communication unit installed.
1. Install a communication unit to the interface where the
channel (CH No.1 to 4) is set.
2. Change assignment of the channel (CH No.1 to 4) in the
Communication Setting.
Units are mounted on the GOT exceeding the maximum
number of mountable units.
Check the number of units, and remove unnecessary units.
Two or more units which cannot be mounted on the GOT
simultaneously are mounted.
Check the mounted units, and remove unnecessary units.
The unit is not mounted on the GOT in the correct position.
Confirm the mounting position of the unit.
Units are mounted on the GOT exceeding the maximum
number of mountable units.
Check the number of units, and remove unnecessary units.
20.3 ERROR MESSAGE AND SYSTEM ALARM
20.3.2 List of Error Message/System Alarm
17
Channel
No.
storage
18
19
20
*1
*1
*1
*1
*1
*1
20
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