Rockwell Automation 1770 DH,DHII,DH485 CABLE - Manual (Page 123)

Constructing RS-232-C and
Longline Cables
Appendix A
A-11
Figure A.15
A longline connection from a 1771ĆKE, 1771ĆKF, or 1771ĆKG module to a
1773ĆKA or 1775ĆKA module.
2
14
3
13
4
5
6
8
11
1
3
25
2
4
5
1
6
8
20
7
15-pin Male
Connector
RS-232-C
PORT Connector
of 1771-KE,
1771-KF, or
1771-KG
Module
RS-232-C
PORT Connector
of 1773-KA
or 1775-KA
Module
25-pin Male
Connector
Connect the shield
at one end only
User-supplied cable,
Belden 8723, or Equivalent
(7000 ft. max)
NOTE: User supplied male connectors
12542
Important: For cables longer than 50 feet, conductors 2 and 14, and 3 and 13
must be twisted pairs.
Important: For a 1775-KA module, turn off (open) switch 3 on the module.