Self-diagnostic Function
Section 6-2
6-3
6-2
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.
Details of Errors
Errors detected by the Controller can be classified into “fatal errors” and
“nonfatal errors.”
Fatal Errors
If the hardware of the Controller fails, the operation of the CPU will be
interrupted and the ERROR indicator will turn ON or flash.
Nonfatal Errors
If there is a communications error between the Controller and host or the
Antenna and Tag, the ERROR indicator will turn ON.
Indicator
Error type
Item
RUN
COMM
NORM
ERROR
Awaiting command
ON
OFF
OFF
OFF
Communicating with Tag
ON
ON
OFF
OFF
Normal
operation
Normal completion of communications with Tag
ON
OFF
ON
OFF
CPU error
OFF
OFF
OFF
ON
Fatal error
Memory error
OFF
OFF
OFF
Flashing
Communications error
ON
OFF
OFF
ON
Nonfatal error
Host communications error
ON
OFF
OFF
ON
