Table of Contents
Advertisement
Local Line Biasing (continued)
SIMATIC TIWAY I Series 500 NIM User Manual
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.
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.
Network Design Considerations
2-17
Advertisement
Table of Contents
