厦 门 才 茂 通 信 科 技 有 限 公 司
Xiamen Cai
more
Communication Technology Co.,Ltd
Add: 3F, 1st Building, 23# Wanghai Road, Xiamen
Tel: +86-592-5902655
Web:
http://en.cai
more.
com
Fax:+86-592-5975885
9
computer ,the
date flow is:
DTU<-computer)
3
TX
RS232 interface,
send pin(Assume
DTU connected
to computer ,the
date flow is:
DTU->computer)
NO
output
Standard RS232
voltage
4
Active
Sleep mode
activated IO pin
(not supported,
reserved for
future expansion
use)
NO
5
GND
RS232
NO
6
无
NO
7
Enable pin
SW
IO port power
switch(By
controlling this
pin controls the
power on and off
throughout the
DTU, when
connected -10v ~
0v voltage or let
the pin dangling
DTU power on,
power DTU, 3.3v
~ 30v voltage
DTU power off)
CTS
Hardware
Flow
Control
input
SW function, input
voltage:-10v~30v
8
USB
USB+
USB+
RTS
Hardware
Flow
Control
9
USB-
USB-
NO
