Publication 2711P-UM001D-EN-P - September 2005
6-8 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.
Constructing a Null Modem Cable
To construct a null modem cable, refer to this pinout.
PanelView Plus
9-pin
9-pin PanelView Plus
9-pin
25-pin
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
DF1 Port
Optical Isolator
Modem
Modem
Controller
PanelView Plus
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