Operation Manual

High Frequency Integrated RFID Reader Operation Manual Guangdong Sygole Intelligent Technology Co.,Ltd
Tab. 3.1 Critical Distance (Sg), Operation Distance and Transmission window Length
Corresponding to Reader
Reader Model
Operation Distance
Critical Distance S
g
Transmission
window Length L
SG- HR-I1
0~24 mm
30 mm (related to tag)
15 mm
3.2.2 Single-time read-write limitation and read-write time of the
reader
The high frequency reader has the following limitation upon the read-write operation in the tag:
1. For single-command execution, the volume of the data read-write operation in the tag is as
follows: the maximum data volume is 120 bytes.
2. For execution of multiple read-write commands, the next command can be executed only after
a single command is executed and successfully responded.
Tag read-write time is determined by the following factors: tag memory type, read-write data
volume, reader working mode and communication rate.
Reader has two working modes: interaction mode and automatic card-read mode (automatically
read UID and automatically read tag memory). Under card-read mode, the reader RF is in working
mode; when the tag is close to the transmission window, the tag will be automatically recognized;
if the upper computer sends a command for tag read-write operation, the reader needs to firstly
completely process the present automatic card-read operation and then execute the command sent
by the upper computer.
The co mmon tag memory type includes EEPROM and FRAM, and the reader takes different time
to read and write the above two memory types. Two Sygole tags SG-HT-243(EEPROM) and
SG-HT-244(FRAM) are taken as the example, when a tag is located in the read-write area and the
automatic card-read function is unavailable, the time for read operation is as shown in the
following table. The time listed in the table refers to the time difference between the time for the
reader to receive the command request and the time for returning the response frame, and it is not
related to the communication and the controller dispatching.
Read Bytes
Tag Model
SG-HT-243(EEPROM)
SG-HT-244(FRAM)
Time Consumption (ms)
Time Consumption (ms)
8
28
28
16
31
31
32
37
36
64
55
56
112
85
86
If the data range read according to the command request is included in the automatic
card-read data range, when the command request is received, the reader will directly access the
data in the cache and respond to the command. If the automatic card-read function is configured
and the data range read according to the command is inconsistent with the automatic card-read
function, the reader will take the time for at most two card-read operations.
When a tag is located in the read area and the automatic card-read function is unavailable, the
write time is as shown in the following table:
Write Bytes
Tag Model
SG-HT-243(EEPROM)
SG-HT-244(FRAM)
Time Consumption (ms)
Time Consumption (ms)
8
41
35
16
63
36
32
106
52
64
193
85
112
323
135