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Protocol Faults

Appendix C: Error Messages 221

FAULT_NO_TAGS_FOUND – 400h

Cause

A command was received (such as like read, write, or lock) but the operation failed. There

are many reasons that can cause this error to occur.

Here is a list of possible reasons that could be causing this error:

 No tag in the RF field

 Read/write power too low

 Antenna not connected

 Tag is weak or dead

Solution

Make sure there is a good tag in the field and all parameters are set up correctly. The best

way to check this is to try few tags of the same type to rule out a weak tag. If none

passed, then it could be SW configuration such as protocol value, antenna, and so forth,

or a placement configuration like a tag location.

FAULT_NO_PROTOCOL_DEFINED – 401h

Cause

A command was received to perform a protocol command but no protocol was initially

set. The reader powers up with no protocols set.

Solution

A Set Current Tag Protocol (63h) command must be sent followed by resending the

desired command.

FAULT_INVALID_PROTOCOL_SPECIFIED – 402h

Cause

A Set Current Tag Protocol (63h) command was received for a protocol value that is not

supported with the current version of SW.

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Thingmagic M5e-Compact Manual de usuario Pagina 221