Communications Ports; Usb Device Port; Ethernet Port - Campbell CR300 Series Product Manual

also ground the system through the building plumbing, or use another verified connection to
earth ground.
See also:
Ground loops (p. 133)
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Minimizing ground potential differences
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2.4 Communications ports

The data logger is equipped with ports that allow communications with other devices and
networks, such as:
Computers
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Smart sensors
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Modbus and DNP3 networks
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Ethernet (CR310)
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Modems
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Campbell Scientific PakBus® networks
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Other Campbell Scientific data loggers
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Campbell Scientific data logger communications ports include:
RS-232
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USB Device
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Ethernet
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C terminals
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2.4.1 USB device port

One USB device port supports communicating with a computer through data logger support
software or through virtual Ethernet (RNDIS), and provides 5 VDC power to the data logger
(powering through the USB port has limitations - details are available in the specifications). The
data logger USB device port does not support USB flash or thumb drives. Although the USB
connection supplies 5 V power, a 12 VDC battery will be needed for field deployment.

2.4.2 Ethernet port

The RJ45 10/100 Ethernet port is used for IP communications.(CR310 only.)
(p. 139)
2. Wiring panel and terminal functions 11