174 Publication 2711P-UM001I-EN-P - December 2008
Chapter 7 Terminal Connections
Modem Connection
Wire or radio modem communications is possible between the
terminal and controller. Each modem must support full duplex
communications. 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
P lu s 9- p in
9-pin
Modem
PanelView
P lu s 9- p in
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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