Telenetics Modular Nest manual Filler Panels

	Part No. TEL–09949, Rev A
Pre-Installation Information and Activities	June 2001
	Page 20 of 34

Filler Panels

A group’s network management signaling is passed along a multi-drop bus in the backplane to each NC port. One slot of each group is the Bus Master slot (NC 1 for group 1, NC 2 for group 2, etc.). The group number is identified by the Bus Master slot number (e.g., Group 1 uses Bus 1 Master slot). For a group’s NC port to work, its Bus Master slot must be occupied. Figures 9 and 10 show this for each backplane.

	1-Card	1-Card		1-Card	9-Card
Backplane Backplane			Backplane		Backplane

OUT

NC

IN

OUT

NC

IN

OUT

NC

IN

NC		NC BUS
MSTR	IN	OUT
2

NC

MSTR

OUT 1

COMM +5V +12V -12V

AC POWER

NC Port and Bus Master Slots
Are within Shaded Areas	Network Control Group 1Network Control Group 2

Figure 9. NC Port and Bus Master Locations, and Groups (1- and 9-Card Backplanes)