Rockwell Automation 1784-KTS_KTX_KTXD User Manual Communication Interface Card - Manual (Page 41)

Connect the Interface Card 4-7
1784-6.5.22 - November 1999
Terminate the Last Node
You must terminate both ends of your DH+ network. If the KTx is the last
physical node on your network, you must set the switch on the CP12 to terminate
the link as shown below.
Connect the Card to a Data Highway Plus Network
To connect the 1784-KTX or -KTXD card to a Data Highway Plus network, use
Allen-Bradley 1770-CD or approved cable to construct custom cable.
Important: You must terminate the last physical node of the network with a
resistor of appropriate value.
Evaluate 1784-KTx Card Connection Options
In your application, you may need to use the 1784-KTx card to
communicate with:
• multiple DH-485 stations (for example, SLC 5/0x programmable controllers)
via the DH-485 network (page 4-8)
• a single SLC 500 via a point-to-point DH-485 link (page 4-9)
Figure 4.1 and Figure 4.2 illustrate these applications.
3-pin Phoenix connector with
switchable termination resistor
node terminated
node not terminated
42138