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▪ Individually connect each 0V point and each common (CM) point in the system to the power supply
0V terminal, unless otherwise specified.
▪ Individually connect each functional ground point ( ) to the earth of the system (preferably to the
metal cabinet chassis).
Use the shortest and thickest wires possible: less than 1m (3.3') in length, minimum thickness 14
AWG (2 mm
2
).
▪ Connect the power supply 0V to the earth of the system.
▪ Earthing the cables' shield:
➢ Connect the cable shield to the earth of the system (preferably to the metal cabinet chassis). Note
that the shield must be connected only at one end of the cable; it is recommended to earth the
shield at the PLC-side.
➢ Keep shield connections as short as possible.
➢ Ensure shield continuity when extending shielded cables.
For detailed information, refer to the document System Wiring Guidelines,
N
OTE
located in the Technical Library in the Unitronics' website.
Wiring the Power Supply
The controller requires an external power supply.
▪ In the event of voltage fluctuations or non-conformity to voltage
power supply specifications, connect the device to a regulated
power supply.
Connect the +V and 0V
terminals as shown in the
accompanying figure.
Connecting Ports
▪ Ethernet
▪ USB Device
▪ USB Host
8
CAT-5e shielded cable with RJ45 connector
Use a standard USB cable, Type mini-B
Standard USB Type-A plug
User Guide
Unitronics
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