Specifications

Niagara Release 2.3
Revised: May 22, 2002 Niagara Networking & Connectivity Guide
Chapter 3 Connecting on a LAN
Connecting a New JACE Controller
3–12
Ethernet straight through (also called standard) and crossover cables are widely
available commercially. However, if you do not have a cable with you that you need
you can use the information in Table 3-5 to make up a cable. Both EIA/TIA 568A
and 568B pinouts are given. The only real difference between 568A and 568B is that
the White/Orange-Orange and White/Green-Green pairs are swapped.
To make a straight through cable, choose either the 568A or B pinout and make both
ends to the same standard. To make a crossover cable, make one end following each
standard.
The following figure provides a pin reference for an RJ-45 (male) connector.
Figure 3-5 RJ-45 male pin reference.
Connecting to the LAN and Assigning the IP Address
Use the following procedure to attach the JACE to a LAN, assign its working IP
address, and verify connectivity.
Procedure 3-3 Connecting a JACE controller to an Ethernet LAN.
Step 1 Attach one end of a standard Category-5 Ethernet unshielded twisted pair (UTP)
patch cable to the RJ-45 connector on the JACE.
Step 2 Attach the other end of the patch cable to a network port or directly to an Ethernet
hub.
Table 3-5 Ethernet cable pinouts.
Pin # Signal EIA/TIA 568A EIA/TIA 568B
1 TX+ White/Green White/Orange
2 TX- Green or Green/White Orange or Orange/White
3 RX+ White/Orange White/Green
4 Not used
1
Blue or Blue/White Blue or Blue/White
5 Not used White/Blue White/Blue
6 RX- Orange or Orange/White Green or Green/White
7 Not used White/Brown White/Brown
8 Not used Brown or Brown/White Brown or Brown/White
1. Even though the wires connected to these pins are not used, you should connect them anyway.