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User Manual version 2503
LIBRA 120 III (PC620 Intel 815E)
6-114
B: DIO (Digital Input & Output)
The LIBRA III provides 2-channel digital input and output
that can be used for the system’s simple automation control
needs. The digital I/O can be configured to control the
opening of a cash drawer or to sense the warning signal of an
uninterrupted power system (UPS) or to do the store security
control.
The DIO port address and pin definition is listed below;
I/O Port address: 200H/208H By CMOS Setting
Read: SD0, SD1
Write: SD4, SD5
123456
DIO1
RJ11
VCC12
VCC5
VCC5
IN_0
IN_1
OUT_1
OUT_0
MOSFET N
4.7K
DIO1
RJ11
1
2
3
4
5
6
4.7K
SD0 IN_0
SD1 IN_1
-IOR206H
74LS244
218
416
614
812
119
137
155
173
1
1920
10
1A11Y1
1A21Y2
1A31Y3
1A41Y4
2A12Y1
2A22Y2
2A32Y3
2A42Y4
1G
2GVDD
GND
IO 206H(READ)
IO 208H(READ)
SD4
OUT_0
SD5
OUT_1
-IOW206H
74LS273
3
4
7
8
13
14
17
18
11
1
2
5
6
9
12
15
16
19
20
10
D1
D2
D3
D4
D5
D6
D7
D8
CLK
CLR
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
VCC
GND
IO 206H(WRITE)
IO 208H(WRITE)
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