Description

Harmony sequence of events (SOE) provides distributed event monitoring, recording, and report

ing capabilities for the Symphony™ Enterprise Management and Control System. An SOE event

is a transition of a digital signal from either on to off or from off to on. A series of SOE modules

collect and time-stamp these digital transition events which are then made available to the system.

Figure 1 shows the distributed sequence of events system architecture.

An SOE module consists of a single printed circuit board that occupies one slot in a module

mounting unit (MMU). In general, jumpers and switches on the printed circuit board and jumpers

and dispshunts on the termination unit configure the module and its I/O channels. A cable con

nects the SOE module to its termination unit. The physical connection points for field wiring are

on the termination unit.