Yokogawa PR300 Power and Energy Meter - Manual (Page 22)

<Toc> <Ind> <2. Setup>
2-13
IM 77C01E01-10E
2.3.2 Wiring for Ethernet Communication
To use the Ethernet communication function, connect a higher-level device with the PR300
with Ethernet communication function using 10BASE-T/100BASE-TX. 10BASE-T/
100BASE-TX are Ethernet connection methods using twisted pair cables. The transmission
rates are 10 Mbps/100 Mbps. In 10BASE-T/100BASE-TX networks, higher-level devices
such as a PC are connected in a star pattern through a hub.
WARNING
To avoid an electric shock, be sure to turn off the power supply source to the equipment
involved before you start wiring.
Use hubs and twisted pair cables that conforms to the Ethernet specifications. The maxi-
mum number of hubs connectable in cascade configuration is 4 for 10ABSE-T and 2 for
100BASE-TX. The maximum allowable length of twisted pair cables is 100 meters.
Read the user’s manual of each device carefully before wiring.
PR300 with
Ethernet
communication
function
PC
Ethernet
Data transmission
and reception
HUB
* Devices that can be connected to Ethernet
Ethernet Port of PR300
The PR300 can detect 10BASE-T or
100BASE-TX automatically. The LEDs of
Ethernet port show its status.
Color
Off
Amber
Green
Meaning
No Link
10 Mbps
100 Mbps
Link LED (upper side)
Color
Off
Amber
Green
Meaning
No Activity
Half-duplex
Full-duplex
Activity LED (lower side)