Siemens SIMADYN D - Page 182

Communications support modules
6-34 Hardware - SIMADYN D
Edition 12.2004
390
390
150
RS485+
RS485-
Bus terminating resistor
+5V
0V
Resistor to the
supply voltage
Resistor to the
signal reference
Fig. 6-11 RS 485 bus termination
390
150
RS485+
22
390
RS485-
18
21
17
5
8
7
14
2
20
USS busSS4
Fig. 6-12 Connector assignment SS4 with bus termination
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