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6-2
To shorten the system down time when an error has occurred in an antenna, you can diagnose through an indicator.
♦
♦
♦
♦
At a normal operation
: Turns on.
: Turns on only at radio wave transmission or communication.
: Turns off.
♦
♦
♦
♦
When an error has occurred
: Turns on.
: Turns on at communication.
: Blinks.
: Turns off.
Antenna Indicator
Indication
P
C
H
T
Power
supply
Radio wave
transmission
Host trans-
mission
Tag trans-
mission
Power is supplied to an antenna, but no communication is
made to a tag.
Simplified communication function of the setting mode works.
Indicator C: means waiting for a tag and
means communication with a tag.
Executes a command of Trigger and communicates with a tag.
Executes a command of Auto or Repeat and waits for a tag.
Executes a command of Auto or Repeat and communicates
with a tag.
Trouble
Antenna Indicator
Estimated Cause
Countermeasures
P
C
H
T
Power
supply
Radio wave
transmission
Host
communication
Tag
transmission
Antenna does not
respond
• An error in power supply
to an antenna
• Antenna failure.
• Check the power supply voltage.
• Replace the antenna with a new
one.
• Antenna failure.
• Replace the antenna with
a new one.
• An error communication
with a host device.
• Check the communication
line to the host device.
—
—
Tag does not
respond
—
• A tag is in a sleep state.
• Tag failure.
• Antenna failure.
• Take the tag out of the commu-
nication area and return to the
area again.
• Replace the tag with a new one.
• Replace the antenna with a new
one.
6-2 Diagnosis Function