Table 2-8 Terminals For Connecting A Udc To A Mdi Compliant Hub Or Switch Utilizing A Cross-Over Cable; Figure 2-22 Ethernet Communications Option Without Adaptor Board - Honeywell UDC3500 Product Manual

instrument. The RJ-45 connector on the Ethernet Adaptor Board will allow you to use a
straight-through cable to connect the controller to a MDI Compliant Hub or Switch.
Alternatively, you may use a crossover cable to connect your controller directly to a PC,
which is useful for commissioning purposes. Use only Category 5 (STP CAT5) shielded
twisted-pair Ethernet cables. For strain relief, secure your Ethernet cable to the controller
with the tie wraps included in the kit using the holes in the bottom controller flange.
4 SHLD

Figure 2-22 Ethernet Communications Option without Adaptor Board

If you would rather wire your UDC to your Ethernet connection without using the
Ethernet Adaptor Board, then Figure 2-22 and Table 2-8 show the connections for a
UDC to a MDI Compliant Hub or Switch utilizing a straight-through cable or for
connecting a UDC to a PC utilizing a crossover cable.
Table 2-9 shows the connections for a UDC to a PC utilizing a straight-through cable
(wiring the UDC cable this way makes the necessary cross-over connections).
Table 2-8 Terminals for connecting a UDC to a MDI Compliant Hub or
UDC Terminal
Position 4
Position 24
Position 25
Position 26
Position 27
10/05
24 RXD +
25 RXD -
26 TXD +
27 TXD -
Do not run the communications lines in the same conduit as AC
1
power. Direct connection to a PC may require the use of an
Ethernet cross-over cable.
2 Use Shielded twisted-pair, Category 5 (STP CAT5) Ethernet cable.
Use Switch rather than Hub to maximize performance.
3
4 Ethernet Communications is mutually exclusive with the Second Current
Output.
Switch utilizing a cross-over cable
UDC Signal Name
Shield
RXD-
RXD+
TXD-
TXD+
UDC3500 Universal Digital Controller Product Manual
COMMUNICATION MASTER
SHLD TXD - TXD + RXD - RXD +
1
2
RJ45 Socket Pin #
Shield
6
3
2
1
3
Switch Signal Name
Shield
TXD-
TXD+
RXD-
RXD+
Installation
39