Rockwell Automation 1770 DH,DHII,DH485 CABLE - Manual (Page 118)

Constructing RS-232-C and
Longline Cables
Appendix A
A-6
Figure A.5
Connecting a 1771ĆKX1 module to a PROVOX system.
2
3
4
5
6
7
8
11
13
1
3
2
4
5
20
7
6
8
1 AA
BB
BA
CA
CB
CC
AB
CD
CF
RS-232-C
Connector of
1771-KX1
Module
RS-232-C
Connector of PROVOX
System PCIU)
RS-232-C
Pin Assignments:
AA Protective Ground
AB Signal Ground
BA Transmitted Data
BB Received Data
CA Request to Send
CB Clear to Send
CC Data Set Ready
CD Data Terminal Ready
CF Received Line Signal Detector
15-pin Male
Connector
25-pin Female
Connector
12535
11
1770-CX1 Cable (16.5 ft.)
Figure A.6
Connecting a module to data terminal equipment (DTE) without handshaking.
2
3
4
5
6
7
8
20
25
1
3
2
4
5
6
7
8
20
1 AA
BB
BA
CA
CB
CD
AB
CF
CC RS-232-C
Connector of
1773-KA, or
1775-KA,
Module
RS-232-C
Connector or DTE
RS-232-C
Pin Assignments:
AA Protective Ground
AB Signal Ground
BA Transmitted Data
BB Received Data
CA Request to Send
CB Clear to Send
CC Data Set Ready
CD Data Terminal Ready
CF Received Line Signal Detector
25-pin Male
Connector
25-pin Male
Connector
12536
Important: For the 1775-KA module, you do not have to ground pin 25 as long
as switch 3 on the module is turned on (closed).