Advantech SmartMotion ST352 Hardware Manual page 23

3. Router Design
3.9.6 Ethernet Ports (ETH0 and ETH1)
The panel socket RJ45 is used for this interface. The isolation barrier of the Ethernet signal ports against
the ground is 1500 V.
The crossover UTP cable (Ethernet cable) plugs into the RJ45 connector labeled as ETH0 or ETH1 (see
the figure below).
The insulation strength of Ethernet ports from each other and from the rest of the router (grounding) is
dependent on the router version:
Router Version
Without PoE
PoE PD
PoE PSE
SmartMotion ST352 Hardware Manual
Pin 10base-T & 100base-T
1 Tx+ (Transmit Data+)
2 Tx- (Transmit Data-)
3 Rx+ (Receive Data+)
4 —
5 —
6 Rx- (Receive Data-)
7 —
8 —
Table 13: Ethernet connector pinout
Figure 18: Ethernet connector
Figure 19: Connection of Ethernet cable
Insul. Strength from Router
1.5 kV
1.5 kV
none
Table 14: Insulation strength of Ethernet ports
3.9 Description of the front panel
PoE (Mode B)
—
—
—
PoE + (positive pole)
PoE + (positive pole)
—
PoE - (negative pole)
PoE - (negative pole)
Insul. Strength between Ports
1.5 kV
none
none
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