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Appendix
A.4 Index of the status bytes
Hexadecimal
value
0x80
0x81
0x82
0x83
0x84
Hexadecimal
value
0x92
0x93
106
Interface status
Unknown command:
Selected function not supported by reader
•
Length error:
Selected function has the wrong number of parameters
•
Command is not possible:
The reader is in the wrong mode.
•
Command is not supported
•
RF communication error:
This error indicates that there is an error in the communication between the
transponder and the reader. Possible reasons for this:
The algorithm for collision handling was not continued until no more collisions
were detected. Reason for interruption:
TR-RESPONSE-TIME in CFG1: COM interface is too short
•
Transponder is in the borderline read area
•
Too much noise in the antenna field
•
RF error:
You can read detailed status information with the "[0x6E] Reader Diagnostic
(Page 53)" command.
Check for incorrect configuration of the antenna, antenna cable and antenna
•
setting.
Ambient noise too high
•
RF power does not match the configured value
•
Temperature of the RF end-stage too high, RF power can be reduce or be
•
turned off completely.
Defective RF hardware
•
Buffer status
no valid data:
No valid data in the Buffered Read Mode
•
No transponder in the antenna field
•
VALID-TIME in the "CFG11: Read mode - read data (Page 31)" command for
•
the transponders in the antenna field has not yet elapsed
Data buffer overflow:
The data buffer has overflowed
•
Configuration Manual, 09/2014, C79000-G8976-C377-01
RF290R
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