SMC Networks SI Unit Operation Manual page 21

Case 1
Case 2
Fig. 3-8 Connection examples when autonegotiation function is disabled
3.2.2. FE terminal
The SI Unit must be connected to FE (Functional Earth) to divert electromagnetic interference. Connect a
grounding cable from the FE terminal screw on the SI Unit to the nearest functional earth point. The
grounding cable should be as thick and short as reasonably possible.
- 20 -
No.EX※※-OMU1006-B