Cognex In-Sight 8000 Serie Manuel page 13

Connect the Frame Ground Wire
Connect a frame ground wire to the I/O module's Frame Ground terminal. Connect
the other end of the frame ground wire to frame ground.
CAUTION: The shield ground connections of the RS-232 port, LAN port, PoE
port, I/O port and Frame Ground terminal are internally connected. The
system grounding is designed to be at a zero ground potential; this zero
ground potential extends through the cable and to peripheral equipment (e.g.
a vision system, PLC, etc.). To ensure safe operating conditions, it is strongly
recommended that all ground connections are checked to ensure that a zero
ground potential is met.
Connect an RJ-45 LAN Cable
To connect the vision system to an Ethernet network, plug a LAN cable (RJ-45
connector) into the I/O module's LAN port and connect the other end of the cable to a
switch/router or PC, as applicable.
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