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One end of the M131/M132/M133 cable is TTL voltage level,which is connected to the power supply. Another
end is different.
The Difinition of the DB9 Interface as follows:
Power Supply Side
PC side
1
VCC（+5V）
2
RXD（receive）
3
TXD（send）
4
NC
5
GND（ground）
6
NC
7
NC
8
NC
9
NC
M131（RS232）
1
NC
2
RXD（receive）
3
TXD（send）
4
VCC1
5
GND（ground）
6
NC
7
VCC2
8
NC
9
NC
M132（RS485）
1
A（+）
2
B（-）
3
NC
4
NC
GND
5
（ground）
6
Vout （ +5V）
M133（USB）
1
VCC（+5V）
2
-D
3
+D
4
GND （ground）
Tel: 886.909 602 109 Email: sales@salukitec.com
TTL
Notes:
The pin 4 and 7 are paralleled. Each
is prodvided +12V power.
The pin 4 is provided +12V when
the DTR is enable in process of
programming.
The pin 7 is provided +12V when
the RTS is enable in process of
programming.
The DTR default is set enable in
most serial communication
controls.
Notes：
Only to connect the pin 1 and pin 2 is
able to get the RS485 communicate
normally well.
The pin 5 and pin 6 provides
5V/100Ma for external use.
Notes：
The type A interface of the standard
USB can be directly connected USB
interface of the PC.
The USB driver can be installed.
30
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