Velleman VM122 - Manual (Page 8)

8
Usage and connection
Figure 2.0
7
13
+
VCOM
14
15
10
11
12
9
8
2
5
6
3
4
VB
+V
1
VM122
GND
0
4
0
1
3
0
2
0
0
+12V
0
IN
0
8
0
7
0
5
0
6
VA
K8056 / VM129
RS232
V Out
IN
P
U
T
S