Manual

HXJZ-877 Mini Power Wireless Module User’s Manual
1）User’s interface
HXJZ-877 have one interface of TTL/RS232/RS485, user can choose one .
HXJZ-877 standard interface: when the antenna upward, th e 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