14
Initial Operation
Measures must be taken in all cases to ensure that the supply voltage, measured at the remotest partici-
pant, does not fall short of the system supply voltage of 18 V DC.
To be complied with in reactive operation:
If the power supply of the digital I/O ports is merged with the voltage supply of the switch, there will then
be the risk of a communication disruption in the event of a short-circuit on the I/O devices.
7.3. Functional Earth
The FE connection is on the lower front edge of the switch. To ensure proper functioning in accordance with
the EMC regulations specified in the data sheet, we recommend using our ground strap, which is included in
the scope of delivery (for tightening torque see “Mounting Instructions” on page 12).
7.4. Industrial Ethernet Cable
wenglor provides a variety of preassembled industrial Ethernet cables.
To ensure cabling as simple and reliable as possible, we recommend using our preassembled Industrial
Ethernet cables.
Assignment of the Industrial Ethernet connection:
1
2
3
4
Pin
Function
1
TxD (+)
2
RxD (+)
3
TxD (–)
4
RxD (–)
