Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers - Manual (Page 361)

1 Publication 1785-UM012D-EN-P - July 2005
Appendix
G
Cable Reference
Using This Chapter
Channel 0 Pin Assignments The side label of the controller shows a table listing channel 0 (RS-port) pin
assignments. This table shows the same information:
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Channel 0 pin assignments G-1
Serial cable pin assignments G-2
Connecting diagrams G-3
Programming cable specification G-5
Ethernet cable connections G-9
Pin RS-232C RS-422A RS-423 Pin RS-232C RS-422A RS-423
1 C.GND C.GND C.GND 14 NOT USED
TXD.OUT
- SEND COM
2 TXD.OUT TXD.OUT + TXD.OUT 15
3 RXD.IN
RXD.IN
+ RXD.IN 16 NOT USED
RXD.IN
- REC COM
4 RTS.OUT
RTS.OUT
+ RTS.OUT 17
5 CTS.IN
CTS.IN + CTS.IN 18
6 DSR.IN DSR.IN + DSR.IN 19 NOT USED RTS.OUT - NOT USED
7 SIG.GND SIG.GND SIG.GND 20 DTR.OUT
DTR.OUT
+ DTR.OUT
8 DCD.IN
DCD.IN
+ DCD.IN 21
9 22 NOT USED
DSR.IN - NOT USED
10 NOT USED DCD.IN - NOT USED 23 NOT USED DTR.OUT - NOT USED
11 24
12 25
13 NOT USED CTS.IN - NOT USED
The shading indicates that the pin is reserved.