Protocols for the Buffered Read Mode
10.4 [0x31] Read Data Buffer Info
RF290R
100
Configuration Manual, 09/2014, C79000-G8976-C377-01
Name
Description
Function Description
ANT-NO ANT-NO is a bit field. If the tag is read on more than one antenna and the configu-
ration option "All antenna ports act as one reading point" is set, the corresponding
bits of each antenna where the transponder is read are set in the bit field.
Bit
7
6
5
4
3
2
1
0
Function
b0
b0
ANT6
ANT5
ANT4
ANT3
ANT2
ANT1
Function Description
ANT-
CNT
= antenna counter
Shows the antennas on which a transponder was read.
ANTx
= antenna number
The antenna number depends on the number of the output of the multiplexer. The
decimal places of the antenna number describe the active outputs of the multi-
plexers that switch over to the antenna. ANT-CNT = (mux channel)
RSSIx
= Received Signal Strength Indicator
Note
Please note the following:
•
This command reads the same data sets until these are deleted with the "[0x32] Clear
Data Buffer (Page 101)" command.
•
This command works only in Buffered Read Mode.
•
Data is only transferred if STATUS = 0x00, 0x83, 0x84, 0x93, 0x94.
•
If STATUS = 0x83, 0x84, 0x85, TR-DATA and DATA SETS are always transferred.
10.4
[0x31] Read Data Buffer Info
The "Read Data Buffer Info" command reads the current parameters in the data buffer.
Table 10- 3
Host → reader
Byte
1
2
3
4
5
6, 7
Content
STX
MSB ALENGTH LSB ALENGTH
COM-ADR
[0x31]
CRC16
Default
0x02
-
-
-
-
-