GE 90*-30 PLC Series - Page 14

1-4 Series 90™-30 PLC LONWORKS® Bus Interface Module User's Manual – June 1997 GFK-1322A
1
TT
NNN
N
N
T Termination Network
N Node
S
Switch and Termination Node
(closes loop when activated)
N N
NN
S
Loop
Bus
N N
NN
S
Free
T
NN
N
Figure 1-2. Topology Examples