Chengdu Ebyte Electronic Technology Co.,Ltd.
【
2DI+2AI+2DO
】
MA02-AACX2220 User Manual
Copyright ©2012–2021
，
Chengdu Ebyte Electronic Technology Co.,Ltd.
12
3.3 Port description
Figure 3-3-1 Interface diagram
Table 3-3-1 Port function table
number
pin
definition
note
1
VCC
Power
Suggest RVV 2*0.75 wire
2
GND
Grounding -
3
A/TX
RS232
corresponds to
TX
Recommend RVSP 3*0.5 wire
4
B/RX
RS232
corresponds to R
X
5
DI1
Switch input channel 1
Recommend RVV 2*0.5 wire
6
DI2
Switch input channel 2
7
AI1
Analog input channel 1
8
AI2
Analog input channel 2
9
DO1
Switch output channel 1
The relay has normally open and
normally closed terminals
10
DO2
Switch output channel 2
