Modem connection, Construct a null modem cable – Rockwell Automation 2711P PanelView Plus Terminal User Manual User Manual
Page 172
172
Publication 2711P-UM001J-EN-P - November 2009
Chapter 7 Terminal Connections
Modem Connection
Wire or radio modem communication is possible between the
terminal and controller. Each modem must support full duplex
communication. Refer to your modem user manual for details on
settings and configuration.
Construct a Null Modem Cable
To construct a null modem cable, refer to this pinout.
Null Modem Pinout
PanelView
Plus 9-pin
9-pin
Modem
PanelView
Plus 9-pin
25-pin
Modem
FG (Frame Ground)
-
-
-
1
FG
TD (Transmit Data)
3
2
3
3
RD
RD (Receive Data)
2
3
2
2
TD
RTS (Request to Send)
7
8
7
5
CTS
CTS (Clear to Send)
8
7
8
4
RTS
SG (Signal Ground)
5
5
5
7
SG
DSR (Data Set Ready)
6
4
6
20
DTR
DTR (Data Terminal Ready)
4
6
4
6
DSR
PanelView Plus Terminal
DF1 Port
Modem
Modem
Optical Isolator
Controller
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