RS232-485sch.pdf

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336990886 UNPDF
D
D
VCC
IC2
MAX232
VCC
J4
VCC
C2
10u
16
VCC
C1+
1
C4
10u
VCC
2
3
VCC
V+
C1-
1
2
3
4
GND
6
V-
C2+
4
C3
10u
R1
4 K7
J3
RS485
J1
C1
10u
1
15
5
IC1
75176
GND
GND
C2-
6
VCC
2
RXD
RTS
14
T1Q
T1I
11
TX
1
RO
VCC
8
GND
7
7
10
2
7
R3
1 K 50R..1K
T2Q
T2I
RE
B
3
TXD
13
12
RX
3
6
R1I
R1Q
DE
A
8
CTS
8
9
RTS
4
5
R2I
R2Q
DI
GND
4
C
C
9
GND
1
2
3
4
5
R2
1 0K
J2
RS485
RS232
GND
J5
GND
1
T1
BS170
GND
2
3
ENA
GND
1
2
3
4
5
6
7
8
9
10
TX
SV1
GND
RX
B
B
PL1
VP
1
2
VCC
VCC
RF-RXTX
GND
VCC
VCC
VCC
A
E-LAB RS232 to RS485
Rev#
Datum
Rev.
Obj.
A
C 6
10u
C 7
10u
TZ1
5V6
Converter 485/RF
E-LAB
GND
GND
GND
Copyright by E-LAB
REV2
C O M P U T E R S
Tel. 07268/9124-0
Fax 07268/9124-24
Datum:
29-Apr-2004
Blatt
1
von
1
D74906 Bad Rappenau
Name:
R. Hofmann
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