Siemens SIMATIC NET Instrucciones de operaciones descargar pdf (Pagina 39)

100

101

Configuring Networks

3-13

SIMATIC NET Twisted-Pair and Fiber-Optic Networks

C79000-G8976-C125-02

3.2.4 Bus Structure Containing only ELMs

Up to 13 ELMs can be cascaded in series using TP cables providing no further

network components exist (see sample calculation).

Cascading ELMs via the ITP Ports

ELM

ELM ELM

1. ITP standard cable 9/15

Node 1

Node 2

2. ITP XP standard cable 9/9

Figure 3-3 Example of a Bus Structure with ELMs via ITP Ports

Sample Calculation (cascading limits)

Number of ELMs Delay Equivalent from

Node 1 to Node 2

Total PVV

2 3 BT + 3 BT 6 BT

4 3 BT + 2 * 3 BT + 3 BT 12 BT

8 3 BT + 6 * 3 BT + 3 BT 24 BT

11 3 BT + 9 * 3 BT + 3 BT 33 BT

12 3 BT + 10 * 3 BT + 3 BT 36 BT

13 3 BT + 11 * 3 BT + 3 BT 39 BT

14 3 BT + 12 * 3 BT + 3 BT 42 BT > 40 BT !!

Number of ELMs Delay Equivalent from

Node 1 to Node 2

Remaining Cable Length

2 140 m + 190 m + 190 m + 140 m 3860 m

4 140 m + 190 m + 2 * 190 m + 190 m + 140 m 3480 m

8 140 m + 190 m + 6 * 190 m + 190 m + 140 m 2720 m

11 140 m + 190 m + 9 * 190 m + 190 m + 140 m 2150 m

12 140 m + 190 m + 10 * 190 m + 190 m + 140 m 1960 m

13 140 m + 190 m + 11 * 190 m + 190 m + 140 m 1770 m

1 2 ... 34 35 36 37 38 39 40 41 42 43 44 ... 337 338

Comentarios a estos manuales

Sin comentarios

Siemens SIMATIC NET Instrucciones de operaciones Pagina 39

Comentarios a estos manuales

Relacionado con productos y manuales para Los Cables Coaxiales Siemens SIMATIC NET