59
UK
13.3 Access to the User data of the RFID tag
To access the User data of the RFID tag, the IO channel has to be set into “user” mode . This can be done
by setting the UR bit of the control byte to 1 . In the following command sequence the RFID tag is in the
reading field of the Read/write head .
Step 0:
Tag in field
Step 1:
Activate bit UR
Step 2:
Wait for bit UD
Remark
PLC process data output
Byte 1
0 0
0
0
0
Now the Read/write
head is able to
proceed read and
write requests to
the User data of the
RFID tag .
1 AO
0
0
0
2 WR
0
0
0
3 RD
0
0
0
4 UR
0
1
1
5 0
0
0
0
6 DR
0
0
0
7 0
0
0
0
Byte 2
0x00
0x00
0x00
Byte 3
0x00
0x00
0x00
Byte 4
0x00
0x00
0x00
Byte 5
0x00
0x00
0x00
. . .
…
…
…
Byte 19
0x00
0x00
0x00
Byte 20
0x00
0x00
0x00
Step 0:
Tag in field
Step 1:
Activate bit UR
Step 2:
Wait for bit UD
Remark
PLC process data input
Byte 1
0 TP
1
1
1
Now the Read/write
head is able to
proceed read and
write requests to
the User data of the
RFID tag .
1 AI
0
0
0
2 WR-RDY 0
0
0
3 RD-RDY 0
0
0
4 UD
0
0
1
5 EF
0
0
0
6 DR-RDY 0
0
0
7 Diag
0
0
0
Byte 2
0x08
0x08
0x00
Byte 3
0xE0
0xE0
0x00
Byte 4
0x04
0x04
0x00
Byte 5
0x04
0x04
0x00
…
…
…
…
Byte 19
0x00
0x00
0x00
Byte 20
0x00
0x00
0x00