User's Manual

Troubleshooting
29
No buzzer when
reading a tag.
Buzzer malfunction. Reader may operate normally without
buzzer, but the reader should be
replaced as soon as possible.
Reader board failure. If the reader does not read or write,
replace the reader.
Reader software is
corrupt.
Replace reader.
No RS-232
Communication.
External RS-232 cable
malfunction
Check cable connectors for bent or
broken pins. Replace external RS-485
cable if necessary.
Reader board failure. Replace reader.
No RS-485
Communication.
External RS-485 cable
malfunction.
Check cable connectors for bent or
broken pins. Replace external RS-485
cable if necessary.
Wrong jumper setting. Ensure RS-485/Ethernet Jumper J4 is
across Pins 1-2.
Reader board failure. Replace reader.
No Digital I/O signals
present.
Reader board failure. Replace reader.
Tag ID/data is different
from expected value.
Reader software
version.
Program reader with latest software
version release.
Electromagnetic
interference.
Shield or reposition reader
Tag read failure. Read range exceeded. Reposition reader or tag.
Tag speed exceeded. Slow tag when within range of reader.
Faulty tag. Verify reader operation with a known
good tag.
No Ethernet
connectivity
External Ethernet cable
faulty.
Check cable and replace if necessary.
Wrong jumper setting. Ensure RS-485/Ethernet Jumper J4 is
across Pins 2-3.
Wrong Ethernet IP
address.
Use the Digi Device Discovery
application to reverify IP address.
Reader board failure. Replace reader.
Symptom Probable Cause Corrective Action