I-7521/I-7522/I-7522A/I-7523/I-7524/I-7527 User’s Manual,Ver2.5 Aug.2015
30
1.6.6.
Using DI/DO of I-7522A(D)
(valid for I-7522A(D)/I-7524(D)
/I-7527(D))
Inductive
load or
Conductiv
e load
Current Limit Resistor
Load current <= 125mA
Ext. GND
Ext. 24V
Dry contact or TTL/CMOS
or (3.5V to 30V D/I)
11
10
9
8
7
12
6
5
13
14
GND
+VS
D2-
D2+
CTS1
GND
RTS1
INIT
*
16
15
TXD3+
TXD3
-
18
19
20
21
22
17
23
RXD3
+
GND
DI3
I-7522A
TXD1
RXD1
DI2
DI1
DI0
RXD3
-
D1 -
DI+
DI
4
3
2
X507
24
PWR
25
DO0
26
DO1
270
DO2
28
DO3
DO
1
+5V
UA
74HCT08
1
2
3
R2
10K
R1
10K
D/I
TO_CPU
7522A
19~22
+5V
UA
74HCT08
1
2
3
R2
10K
R1
10K
D/I
TO_CPU
7522A
D/I Block Diagram
D O0
D O1
D O2
D O3
PW R
U 1
U LN 2003A
SOI C 16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
B0
B1
B2
B3
B4
B5
B6
E
C OM
C 6
C 5
C 4
C 3
C 2
C 1
C 0
D/O Block Diagram
24
25
26
27
28
Содержание I-7521
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