Installation manual Reader
27
Modifications, misprints and errors excepted
English
4.9. LLRP-Protocol
4.
Connections and displays
4.11.
Digital inputs and outputs
4.10.1.
Frame structure
A frame is structured as follows:
Start + Data block + End
The start consists of 0xAA 0xBB 0x01 0x01, where the first 1 is the data transmit byte and the second 1 a stuff byte.
The end consists of 0xAA 0xCC. If the byte 0xAA occurs in the KBRP frame, it must be doubled (0xAA → 0xAA 0xAA)
4.10.2. Port
The TCP communication port is the Port 4007.
4.10.3. Example
As an example the frame for “ASyncGetEPCs” is shown. The ID for this command is the “0x0111” which then causes
the frame to appear as follows:
0xAA 0xBB 0x01 0x01 0x11 0x01 0xAA 0xCC
4.10.
Ethernet transmission
When communication to our reader is via Ethernet, a data transmission layer is also used, as for serial communication.
The transmission layer via Ethernet looks much simpler here, because the TCP/IP protocol already provides a
data security layer. All we need to add are the packet start and packet end, since TCP/IP is a streaming protocol.
The activation and evaluation can be performed using the software
ReaderStart v2
, with the DLL supplied, or by
access to the reader protocol.
Pin
GPIO 1
GPIO 2
1
OUT_CMN
OUT_CMN
2
INPUT 4
INPUT 1
3
INP_CMN
INP_CMN
4
GND
GND
5
UB
UB
6
OUTPUT 4
OUTPUT 2
7
OUTPUT 3
OUTPUT 1
8
INPUT 3
INPUT 2
1 2
7 3
6 4
5
8 central pin
