Thermo Scientific AquaSensors
™
DataStick
™
Ethernet Communications User Guide
12
3.1.2 Electrical Connections
The Adapter is supplied with an 8-conductor integral industrial CAT5 Ethernet cable that
is terminated with an RJ45 plug. The pin positions of the plug are shown in Figure 12
and the signal names and functions are defined in Table 1.
Figure 12: RJ45 plug pin positions
Table 1: RJ45 connector pin assignment
Pin Position
Signal Name/Function Mode A
Signal Name/Function Mode B
1
Tx+ (Transmit)/DC+
Tx+ (Transmit)
2
Tx– (Transmit)/DC+
Tx– (Transmit)
3
Rx+ (Receive)/DC–
Rx+ (Receive)
4 Not
used
DC+
5 Not
used
DC+
6
Rx– (Receive)/DC–
Rx– (Receive)
7 Not
used
DC–
8 Not
used
DC–
3.1.3 Location of Adapter’s MAC Address
The Adapter’s Media Access Control (MAC) Address is printed on a label that is affixed
to the integral Ethernet cable. The MAC Address can also be read electronically using
the supported EtherNet/IP or Modbus TCP protocols, or by browsing to the Adapter’s
CommSettings Web page.
