Siemens SIMATIC NET PROFIBUS Owner's Manual page 60

Topologies of SIMATIC NET PROFIBUS Networks
Uses
The DP/AS-interface link 20 implements a small, cost-effective link between
PROFIBUS and AS-interface. The DP/AS-interface link 20 requires no additional
power supply, the power is supplied on the AS-interface cable. The AS-interface
segment can be started up without PROFIBUS-DP being in operation.
The DP/AS-interface link 20 is a PROFIBUS-DP slave (complying with EN 50170)
and AS-interface master in one unit and provides a simple link between
PROFIBUS-DP and the AS-interface. The DP/AS-interface link 20 allows system
attachment of the following:
S PROFIBUS-DP master, for example CP 342-5 for S7-300, CP 443-5 extended
for S7-400, CP 5431 FMS/DP or IM 308C for SIMATIC S5, CP 5412 (A2) for
PC or CP 5611/CP 5511 for PCs with DP-SOFTNET software.
S Other systems with DP master functionality
Field level networking with PROFIBUS-DP
AS-i power supply
Actuator/sensor
with slave ASIC
Figure 2-23 Example of a Configuration with DP/AS-Interface Link 20
2-34
ADR
BF DP/AS-Interface
Link 20
DIA
29 24 19 14 9 4 SF
28 23
18 13 8 3 APF
27 22 17 12 7 2 CER
31 26 21 16 11 6 1 AUP
X 2
34
30 25 20 15 10 0 CM
5
6GK7 1415 2AA0
DP/AS-Interface Link 20
Passive modules
(without slave ASIC)
AS-i
cable
Active modules
(with slave ASIC)
Branch
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000