Siemens SIMATIC TIWAY 1 Manual do Utilizador descarregar pdf (Página 35)

Network Design Considerations

2-17

SIMATIC TIWAY I Series 500 NIM User Manual

Local Line Biasing (continued)

Termination of the Local Line must be at the tap housings at the extreme

ends of the network spine, and is accomplished as follows:

1. The factory-installed termination resistors in the tap housing (see

Figure 2-6) are left in place in the tap housing which is to be used to

terminate the Local Line.

2. If the termination resistors are used and the attached NIM has a Bias

Switch, the bias switch should be moved downward to the ON position.

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 



























Figure 2-6 Terminating the Local Line

NOTE: All Siemens tap housings contain factory-installed terminating

resistors. If the Tap Housing is not used to terminate the Local Line, the

terminating resistors must be removed when the output cable is attached.

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Siemens SIMATIC TIWAY 1 Manual do Utilizador Página 35