Rockwell Automation 1770-KF3 DH-485 Communication Interface User Manual - Manual (Page 18)

Installing the KF3
Chapter 2
2Ć10
If your computer requires active DSR and CTS signals, add jumpers to the
computer connections as shown in Figures 2.13 and 2.14.
Figure 2.13
Jumper Positions for DSR and CTS Lines (25 pin)
KF3 Computer
1
TXD 2
RXD 3
GND 7
3 RXD
2 TXD
7 GND
Shield
4 RTS
5 CTS
6 DSR
8 DCD
20 DTR
Figure 2.14
Jumper Positions for DSR and CTS Lines (9 pin)
KF3 Computer
1
TXD 2
RXD 3
GND 7
2 RXD
3 TXD
5 GND
Shield
7 RTS
8 CTS
6 DSR
1 DCD
4 DTR