Emerson Process Management 3-9000-522 Manual Do Utilizador
APPLICATION FUNCTIONS
5-77
MON2000
JULY 2010
GC Phoenix Plug to External Modem DB-25
“null-modem” type cable, as shown below, to
make the connection between the GC and an
external modem.
Figure 5-3 GC DB-9 Port to External Modem DB-25 Port
5.18.2 GC Phoenix Plug to External Modem DB-25
To make an RS-232 serial connection between
one of the Phoenix Plug serial ports of the GC,
and an external modem with DB-25 serial port,
you will need to manufacture the cable and its
DB-25, male plug cable end as illustrated in