7 discrete i/o customer interface wiring, 11 system interface ethernet communication network, 12 system interface ethernet switch – GE Industrial Solutions Entellisys 4.0 System User Manual User Manual
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1.3.10.7 Discrete I/O customer interface wiring
The customer interface to the discrete I/O is provided at the I/O module relay blocks. These relay 
blocks and the customer wire termination points are mounted in the discrete I/O cubicle and are 
accessed from the front of the switchgear. Control conduits are terminated in the rear cable 
compartment and the discrete I/O wiring is routed to the front of the switchgear through an 
opening in the discrete I/O cubicle rear barrier.
1.3.11 System interface Ethernet communication network
The system interface Ethernet communication network is a 10/100 Mbps Ethernet LAN that 
provides an interface into the Entellisys system for systems such as the Entellisys HMI, SCADA 
systems, building automation, HVAC systems or other. The system interface Ethernet 
communication network provides information and control of all circuit breakers in the system. 
The external communications network will use 100BaseT (copper twisted pair) CAT5 or better 
cabling. A fiber optic connection is available as an option.
1.3.12 System interface Ethernet switch
The interface between the Entellisys system and the external world is through the system 
interface Ethernet switch, an industrial hardened 10/100 Mbps Ethernet switch. An 8-port 
copper model is standard. Optionally customers may choose a 9-port model with an additional 
fiber port for external gear communication. The fiber port supports 100FL connections only.
Figure 1-10 Ethernet switch, 8-port
