SOE architecture design

This guide uses the M580 HSBY architecture as an example to design an SOE function.

In the previous diagram, a cooling control system includes a circuit breaker, a contactor, a motor controller, a motor, and a fan. The fan is used to cool down the system temperature when the temperature is higher than the pre-set value. For the process automation monitoring, some device statuses and process values need to be acquired by the PAC. Meanwhile, these statuses need to be time stamped by the PAC for building an SOE service. The first step to designing the SOE function is to define which time stamping module will be used to monitor the status of the devices, and the process for generating the time stamping events. The table below shows which time stamping module is associated with which event.

Event level	Event name	Source devices	TS module
Process events	High temperature alarm	System temperature instrument	M340/eX80 ERT module
Device events	Motor alarm	Motor
	Overload	Contactor	eX80 CRA with RIO module
	Fan status	System cooling fan
	Over temperature	Motor controller
	Manual operation	Circuit breaker	M580 CPU with RIO module