User's Manual Part 2

Installation and System Check Out Connecting to the Host/Remote Pair
Element Management System (EMS) 4.0 User Manual
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2.4 Connecting to the Host/Remote Pair
The EMS software is now presumed to be correctly installed on the computer, and
can be run alone, but to function as intended it must be connected to one or more
Digivance System host/remote pairs.
For the physical connection between the EMS PC and the host/remote pair, use
the RS-232 serial cable provided with the Digivance hardware.
Connect the cable on the PC to the serial port identified in the software as the
EMS/Host/Remote Comm Port (by default this port is COM1). Connect the other
(DB-9) end of the cable to the SERVICE port on either the host unit or the remote
unit. On both the host unit and the remote unit, the SERVICE port is located on
the front console.
NOTE: When EMS is connected directly to a remote unit, only that remote unit
and the corresponding host unit are visible in EMS. When EMS is connected to a
host unit, however, all LRCS system pairs that are presently on the Controller
Area Network (CAN) bus are visible.
NOTE: For information on how the EMS/Host/Remote Comm port is defined, see
Topic 3.3, Defining EMS Ports, on page 29.
NOTE: Multiple host units can be daisy-chained together in a CAN. For informa-
tion, refer to the user manual for the host unit.
Most of the information contained in the LRCS system can be obtained from
either the host or remote unit ports; however, to update some program files, you
must be connected to the host unit port.