User Manual

GuiLin FeiYu Electronic Technology Co., Ltd
GuiLin FeiYu Electronic Technology Co., Ltd http://www.feiyudz.cn E-mail: [e-mail]
Page 3
1）User’s interface
FY-602 have one interface of TTL.
FY-602 standard interface: when the antenna upward, the plastic socket gap upward, from left to right,1-9
pin in turn, as follows:
(Remarks: Jack space between is 2.0 mm.)
Definition of connecting pins and connection method:
Item
no
PIN
Description Level
Connected to the terminal
User terminal
Remarks
1
SLE
Sleep control (input) end
Low level to sleep, High
level awake
2
TXD/ A
(RS-485)
Serial data transmitting
end
RXD/ A (RS-485)
3
RXD/ B
(RS-485)
Serial data receiving end
TXD/ B (RS-485)
4
GND
Power supply/Ground
DGND/AGND
5
VCC
+5±0.5V
+5±0.5V
TTL 3V user’s choose
6
I
2
No use
retain
7
I
1
No use
retain
8
O
2
No use
retain
9
O
1
No use
retain
Remarks:
To avoid to connect the interface reversely and can not communicate, please check and assure the voltage of
2 and 3 pin is existing by using multimeter. If there is one pin that has the voltage, another has not voltage,
which means the interface is connected reversely, pls. Change the connection wires between pin 2 and 3
2) Power supply
FY-602 uses DC power supply with voltage of +5V.
It can also share power with other equipment, however, the high quality power with desirable ripple
factor should be selected. In addition, the reliable grounding must be used if there is other device in the system
equipment. In case of failure to connect with the earth, it can form its own grounding ,but it must be absolutely
User’s equipment
+5v regulator n. power supply
transmitter-receiver