C.s.i Sequence And Events

[wellhung]

What Is The Difference Between A Sequence And An Event In Csi Programming? When Would You Use One As Compared To The Other?

[just_opinion]

Event Definition (EV) : when a certain condition is met - then you define the resoponse. Example: when the DI point is closed (this DI is for chiller alarm) - then you want the controller to send a message or to send an alarm message to to local operator on the local PC (on its screen) At the bottom of the screen (your task manager) you always see the ALARM, MESSAGE & TRANSACTION. This menu will pop up when this DI condition is met

Event Sequence: when a condition is met - then you will enable the event sequence. In this sequence, you will have to write step by step what to do

Example: Schedule is on (1) then you enable the sequence.
In the sequence you want
step 1: start hot water pump #1
step 2: check motor starter to see if it is closed
step3: if not closed then skip 1 steps ( go to step 6 )
step4: if closed go to next step start the boiler then skip one step
step 5: stop pump #1 send alarm

just an example