Rockwell Automation 1771-KA2 Communication Adapter Module - Manual (Page 124)

Start–up and Troubleshooting
Chapter 9
9-22
Figure 9.8
Disconnecting a Station
Trunkline In Trunkline Out
Ground Wire
#12 Ga. to Earth Ground
Dropline Cable
15–Pin Connector
To Data Highway Module
Cable
Trunkline
Dropline
1
6
3
8 7
2
Shield Clear Blue
Cable Wiring
(Green)
Pin 6 Blue
Pin 7 Shield
Pin 8 Clear
1
4
3
2
Notes:
Twist trunkline wires of same color before securing to screw–clamp terminals 1, 2 and 3.
For dropline cable ten feet or less, isolate the dropline shield from the enclosure.
For dropline cables greater than ten feet, attach the dropline drain wire to terminal 7.
1770–SC
Station Connector
Tee Connector
Trunkline
Dropline
Tee Connector
Remove trunkline
segments, then
connect them to
each other. Tee
connector is free.
Trunkline Segments
Segment
Trunkline Segment
Before After
1
2 3
11
3
2
4
When the station is first or last on a trunkline, attach a 150W resistor to terminals 1 and 3.