Rockwell Automation 1770 DH,DHII,DH485 CABLE User Manual
Page 60
Chapter 3
Constructing a Data Highway or
Data Highway Plus Cable System
3-28
If the readings you obtain indicate that no shorts exist, you are ready to
connect the cable segments as explained next in this chapter.
If the readings you obtain indicate a short exists, disassemble the electrical
connector and the station connector and try to locate and correct the short.
Check for frayed wire or wire fragments at each end of the wire. Check the
resistances again.
If the resistance readings:
Then:
Indicate there are no shorts
Attach the dropline to the trunkline. Refer to the appropriate
section later in this chapter.
Indicate that a short exists
The short is probably inside the dropline cable. Discard the
dropline cable and attach the electrical connector to a new piece
of cable. You may remove the connector from the discarded
dropline and reuse it on the new dropline.