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7-3
Section
Errors and Troubleshooting
119
7-2
Self-diagnostic Function
The Controller has a self-diagnostic function to check a variety of items in order
to reduce the downtime of the system that may result due to operational failures.
If an error results, the details of the error may be read through the Programming
Console.
Details of Errors
Errors detected by the Controller can be classified into “fatal errors” and “nonfa-
tal errors.”
If the hardware of the Controller fails, the operation of the CPU will be interrupted
and the ERROR indicator will turn ON.
If there is a communications error between the Controller and host or the Anten-
na and ID Tag, the ERROR indicator will turn ON. The Controller will keep a re-
cord of up to 30 errors in RUN mode if such errors result. If another error should
result, the Controller will keep it on record by deleting the oldest one from the
record, thus always keeping the most recent 30 errors. The Programming Con-
sole makes it possible to read the details of these errors and the number of times
that each type of error has occurred. A synchronization error will occur and the
ERR indicator will light if a Slave is using the mutual interference prevention
function but its synchronization signal is not correct.
Error type
Item
Indicator
RUN
COMM
NORM
ERR
Normal
Awaiting command
ON
OFF
OFF
OFF
operation
Communicating with ID Tag
ON
ON
OFF
OFF
Normal completion of communications with ID Tag
ON
OFF
ON
OFF
Fatal error
CPU error
OFF
OFF
OFF
ON
Nonfatal
Communications error between Antenna and ID Tag
ON
OFF
OFF
ON
error
Communications error between Controller and host
ON
OFF
OFF
ON (See note.)
System error
ON
OFF
OFF
ON (See note.)
Synchronization error (Slave)
ON
OFF
OFF
ON
Note The ERR indicator will light once when the error occurs.
7-3
Errors and Troubleshooting
The 7 main causes for operating problems in the V700 System are listed below:
•
Noise interference
Take steps to reduce noise.
. . . . . . . . . . . . . . . . . .
•
Fault in an external device
•
Fault in the Controller
•
Fault in the Antenna
•
Fault in the Cable
•
Fault in the ID Tag
•
Other problem
Repair required.
. . . . . . .
Fatal Errors
Nonfatal Errors
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