IFM DTE103, Device Manual

Page: 60 / 74

60
13.4 Read User data of the RFID tag on request (synchronous mode)
With one command cycle up to 16 bytes can be read . To read more data, the command cycle has to be
repeated with adapted address setting .
The control and status byte must have value “10” (UD activated) before the following command
sequence can be started .
With one reading cycle (step 4 to 7) up to 16 bytes can be read . If more data shall be read
● the steps 4 to 7 have to be repeated and
● the address offset has to be counted up .
13.4.1 Command sequence view
Step 1:
Bit UD is true
Step 2:
Start reading
(1)
Step 3:
Wait for bit
RD-RDY (2)
Step 4:
Reset bit RD
Step 5:
Wait for reset
bit RD-RDY
PLC process data output
Byte 1
0 0 0 0 0 0 0
1 AO 0 0 0 0 0
2 WR 0 0 0 0 0
3 RD 0 1 1 0 0
4 UR 1 1 1 1 1
5 0 0 0 0 0 0
6 DR 0 0 0 0 0
7 0 0 0 0 0 0
Byte 2 (data length) 0x00 0x08 0x08 0x00 0x00
Byte 3 (address MSB) 0x00 0x00 0x00 0x00 0x00
Byte 4 (address LSB) 0x00 0x10 0x10 0x00 0x00
Byte 5 0x00 0x00 0x00 0x00 0x00
… … … … … …
Byte 19 0x00 0x00 0x00 0x00 0x00
Byte 20 0x00 0x00 0x00 0x00 0x00
Step 1:
Bit UD is true
Step 2:
Start reading
(1)
Step 3:
Wait for bit
RD-RDY (2)
Step 4:
Reset bit RD
Step 5:
Wait for reset
bit RD-RDY
PLC process data input
Byte 1
0 TP 1 1 1 1 1
1 AI 0 0 0 0 0
2 WR-RDY 0 0 0 0 0
3 RD-RDY 0 0 1 1 0
4 UD 1 1 1 1 1
5 EF 0 0 0 0 0
6 DR-RDY 0 0 0 0 0
7 Diag 0 0 0 0 0
Byte 2 (data length) 0x00 0x00 0x08 0x12 0x00
Byte 3 (data) 0x00 0x00 0x12 0x34 0x00
Byte 4 0x00 0x00 0x34 0x56 0x00
Byte 5 0x00 0x00 0x56 0x56 0x00
… … … … … …
Byte 19 0x00 0x00 0x00 0x00 0x00
Byte 20 0x00 0x00 0x00 0x00 0x00
(1) Data length and the memory address of the RFID tag has to be set .
(2) The reading data can be read out from byte 3, the length is dependent from the reading length .