L-IP User Manual
34
LOYTEC
Version 6.1
LOYTEC electronics GmbH
Power Supply
Ethernet
Power Supply
Ethernet
Figure 23: Connecting the Earth Ground to the L-IP series “B”.
4.7.2 L-IP Redundant
Every network segment connected to the L-IP needs to be terminated according to the rules
found in the specification of the transceiver (see Chapter 11).
Important:
All used and unused ports must be properly terminated. LOYTEC recommends the use of
the LOYTEC L-Term series network terminators (LT-13 or LT-33 respectively). For
unused ports, it is recommended to use a 100 Ohm 0.25 W resistor between terminals A
and B as termination.
Bus loop monitoring enabled
Bus loop monitoring disabled
Figure 24: L-IP Redundant with and without Bus loop Monitoring
Important:
When using shielded network cables, only one side of the cable should be connected to
earth ground. Thus, the shield must be connected to earth ground either at the L-IP
terminal (loop port 1) or somewhere else in the network, but never at more than one
place (see Figure 24)!
Important:
If operated with bus loop monitoring enabled (loop port 1 and loop port 2 connected),
both sides of the loop must be terminated at the L-IP terminals (see Figure 24). In this
case two terminators for bus topology must be used.