Modem connection, Construct a null modem cable – Rockwell Automation 2711PC-xxxx PanelView Plus 6 Compact Terminals User Manual User Manual
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Rockwell Automation Publication 2711PC-UM002B-EN-P - April 2014
Chapter 6
Connections and Communication
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.
Figure 11 - Modem Connection
Construct a Null Modem Cable
To construct a null modem cable, refer to this pinout.
Table 45 - Null Modem Pinout
Pin Description
PanelView Plus
Compact 6
9-pin
9-pin
Modem
PanelView Plus
Compact 6
9-pin
25-pin
Modem
Pin Symbol
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
Terminal
DF1 Port
Modem
Modem
Optical Isolator
Controller