Rockwell Automation 1770 DH,DHII,DH485 CABLE - Manual (Page 122)

Constructing RS-232-C and
Longline Cables
Appendix A
A-10
Figure A.13
Connecting a 1771ĆKF, ĆKG, ĆKE or 1785ĆKE to an IBMĆPC/AT without
handshaking.
1
2
7
3
13
4
5
6
8
11
1
4
6
2
5
3
7
8
D - sub 9 - pin
(IBM - PC/AT)
14936
D - sub 15 - pin
(1785-KE)
Figure A.14
A Longline connection between 1771ĆKE, 1771ĆKF and 1771ĆKG modules.
2
14
3
13
4
5
6
8
11
1
3
13
2
4
5
1
6
8
11
14
15-pin Male
Connector
RS-232-C
PORT Connector
of 1771-KE,
1771-KF, or
1771-KG
Module
RS-232-C
PORT Connector
of 1771-KE,
1771-KF, or
1771-KG
Module
15-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
12540
Important: For cables longer than 50 feet, conductors 2 and 14, and 3 and 13
must be twisted pairs.