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Ethernet (LAN) Port
The rear panel LAN connector on the device can be connected to an Ethernet LAN or
WAN. Communication between the device and the control system or PC is via Telnet (a
TCP socket using port 23). The Telnet port can be changed, if necessary, via SIS or using
the SME 211 Web user interface. This connection makes SIS control of the device possible
using a control system or PC connected to the same LAN or WAN. The SIS commands and
behavior of the product are common to the commands and behavior the product exhibits
when communicating by serial port or USB.
LAN port defaults:
DHCP:
SME 211 IP address:
Subnet mask:
Gateway IP address:
Ethernet Connection
The Ethernet cable can be terminated as a straight‑through cable or a crossover cable and
must be properly terminated for the specific application.
•
Crossover cable — Direct connection between the computer and the SME.
•
Patch (straight) cable — Connection of the SME to an Ethernet LAN.
Pins:
1 2 3 4 5 6 7 8
Insert Twisted
Pair Wires
RJ-45
Connector
figure 42.
To establish a network connection to the SME:
1.
Open a TCP socket to port 23 using the SME 211 IP address.
NOTE: If the local system administrators have not changed the value, the
factory‑specified default, 192.168.254.254, is the correct value for this field.
2.
The SME responds with a copyright message including the name of the product,
firmware version, part number, and the current date and time.
If the SME is not password‑protected, the device is ready to accept SIS commands
•
immediately after it sends the copyright message.
If the SME is password‑protected, a
•
copyright message. Proceed to step 3.
3.
If the device is password protected, enter the appropriate administrator or user
password.
If the password is accepted, the device responds with Login User or Login
•
Administrator.
If the password is not accepted, the Password prompt reappears.
•
off
192.168.254.254
255.255.0.0
0.0.0.0
Crossover Cable
(for direct connection to a PC)
End 1
End 2
Pin
Wire Color
Pin
Wire Color
1
white-orange
1
white-green
2
orange
2
green
3
white-green
3
white-orange
4
blue
4
blue
5
white-blue
5
white-blue
6
green
6
orange
7
white-brown
7
white-brown
8
brown
8
brown
T568B
T568A
A cable that is wired as TIA/EIA T568A at one
end and T568B at the other (Tx and Rx pairs
reversed) is a "crossover" cable.
RJ-45 Ethernet Connector Pin Assignments
SME 211 • Remote Communication and Control
Straight-through Cable
(for connection to a switch, hub, or router)
End 1
End 2
Pin
Wire Color
Pin
Wire Color
1
white-orange
1
white-orange
2
orange
2
orange
3
white-green
3
white-green
4
blue
4
blue
5
white-blue
5
white-blue
6
green
6
green
7
white-brown
7
white-brown
8
brown
8
brown
T568B
T568B
A cable wired the same at both ends is called
a "straight-through" cable because no pin/pair
assignments are swapped.
prompt appears below the
Password
59
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