Marathon Computer UNIPRO V3.5 - Manual (Page 177)

MMI Product Documentation
Unipro 3.5 Process Control 1 Aug. 1997
Digital Interfaces
Host
Communications
The Host communications
are able to be set from the
front panel: see “Setup
and Configuration”. The
UNIPRO is suitable for
connection to a host
computer for intelligent
overall process monitoring
or supervision. Terminal
connections are made on
the rear panel: See the
connections label on the
instrument. Twisted pair
wire with or without a
shield must be used for all
communications wiring.
Conventional RS-232 cable
is required along with a
half-duplex RS-232/422
convertor (P/N
FG/500-0501). With a
9-Pin or 25-Pin female
connector depending on
Host Computers connector,
some of the pins on the
computer end of the
connector should be
jumpered together as
follows: 9-Pin: 1,4,6,8 or
25-Pin: 5,6,8,20. The
UNIPRO never initiates