Siemens 500 NIM User Manual
Page 28
Network Design Considerations
2-10
SIMATIC TIWAY I Series 500 NIM User Manual
Figure 2-3
TIWAY I Tap Housing
With the cover removed from the PPX:500–5606 Tap Housing, note that
there are three sets of terminals, and that each set is labelled G, W, and B.
(See Figure 2-3.) One set of these terminals is for the incoming Local Line
twisted pair; the center set is for the drop line; and the remaining set is
used to connect the Local Line to the following node, or to terminate the
Local Line if the Tap Housing is the last one on the network trunk.
For consistency in installation, always connect the LLM+ (Pin 6 of the Local
Line Connector) to the white strand of the twisted pair and to the terminal
marked “W” in the Tap Housing. Connect the blue strand to the LLM– (Pin
9 of the Local Line Connector) and to the terminal marked “B” in the Tap
Housing. The Cable Shield and Signal Common should be connected to Pin
3 of the Local Line connector and to terminal “G” inside the Tap Housing.
Tap Housing Cable
Connections