GE Industrial Solutions HE300GEN150 - Manual (Page 11)

PAGE 12 13 APR 2000 MAN0373-01
CH. 2
2.2 Genius Wiring
Up to 32 devices are wired in a daisy-chained fashion in a Genius network. (See Figure 1.1 for an
overview of Genius network.) The network is terminated at each end with an appropriate terminating
resistor (Figure 2.2). The value of the resistor is chosen to match the characteristic impedance of the
cable. Refer to GE Genius I/O and System Communications User Manual (GE-90486) for help in
selecting an appropriate cable type for the application.
Note: If the characteristic impedance of the cable is unknown, 120-ohm terminating resistors need to be
used
Figure 2.2 – Typical Genius Wiring Techniques
Network devices support four communications terminals, Serial 1, Serial 2, Shield In and Shield Out.
(Figure 2.3.)
The LED designators and connector pin out are shown in Figure 2.3. In addition to the normal Genius
connections showing in Figure 2.2, Frame Ground must be attached to the “FG” terminal, Terminal 5.
Figure 2.3 – Genius Connector