Profichip VPC3+C - Example for the RS485 Interface

9 PROFIBUS Interface
9.2 Example for the RS485 Interf
To minimize the capacity of the
ace
bus lines the user should avoid additional
The typical capa n should be 15...25 pF.
Figure 9-2: Example for the RS485 Interface
capacities. city of a bus statio
VCC_ISO
33
R9 22K
12
R35 330R
12
R36
0R68
12
GND _ISO
R2 330R
1 2
C1
100 080
n 5
1 2
GND _ISO
GND _ISO
RTS
GND
VCC _ISO
R3 1K
9
12
SHIELD
VCC_ISO
30
VCC_ISO
VCC
R4 100K
12
RXD
GND
RTS
R40 470R
1 2
VPC3+C
GND _ISO
26
VCC
R34 680R
12
M24V
VCC_ISO
VCC
IC1 74AHCT1G00
1 2
4
53
B
GND _ISO
R3 100K
12
IC2
DS75176 SO08
1 2 4
6 7 8 5
3
R RE# D
A B
VCC
GND
DE
GND
C15 100n 0805
1 2
VCC_ISO GND _ISO
IC8 HCPL0710 SO08
1 2 4
7 6 8 5
VCC1
VI
GND 1
GND 2 NC VO VCC2
27
IC6
HCP SO08
L0710
1 2 4
7 6 8 5
VCC1 VI
1
NC
VO
VCC2
GND 2
GND
TXD
IC7
HCP SO08
L0601
2 3
7 6 8 5
VE
VO
VCC
GND
A K
GND _ISO
A
X1 SUBD_BU9
11 10
1 6 2 7 3 8 4 9 5
P24V
GND _ISO
XCTS
GND
VCC _ISO
VCC_ISO
80 Revision 1.03
VPC3+C
User Manual
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