Handling of Acquisition Rules

<< Click to Display Table of Contents >>

Navigation:  PlantExpressTools > How to use > Off-Page Connector Manager > Usage > Additional Use Cases >

Handling of Acquisition Rules

Previous pageReturn to chapter overviewNext page

The chapter describes how the OPC Manager handles acquisitions when connecting and disconnecting OPCs.

Project Setup

Basis for this chapter is the setup of Connecting. There are some addition properties in project setup to show how OPC Manager handles acquisition from drawing properties for Line Groups, Line Segments and InlineAssets (and InlineInstruments). The description doesn't apply to acquisitions of project properties, because those properties don't need to be handled by OPC Manager.

We use the drawing property 'Area' as an example, but this works for all drawing properties. This Line Group property will later be handled by OPC Manager.

PET OPCM Use Cases 006

There is also an acquisition for the Pipe Line Segment which acquires from the Pipe Line Group.

PET OPCM Use Cases 007

And finally an acquisition for Inline Assets.

PET OPCM Use Cases 008

When we take a look at the properties if the valve we see, that the Pipe Line Group, the Pipe Line Segment, and the Valve show 10 for 'Area'

PET OPCM Use Cases 009

The three drawings from this example have the following Areas:

PID 001 = Area 10

PID 002 = Area 20

PID 002 = Area 20

Tree Settings

To better explain what will happen when connecting, we add the 'PipeLineGroup' to the Mapping Grid. However, technically that wouldn't be needed. It is just to show what will happen. When we later will connect we will have the same Line Group on both sides and therefor there will never be a different value or an inconsistency.

PET OPCM Use Cases 010

We also expanded the node text expression to show the Area. This is also not necessary, but helps to better understand what is about to happen.

PET OPCM Use Cases 012

Connecting

Before we connect, you see the Area at the front of the node texts.

PET OPCM Use Cases 011

No we connect again as shown under Connecting.

PET OPCM Use Cases 013

Besides the usual inconsistencies of 'Size' and 'Spec', we see that both sides show the same Area. Also the the node in the left tree where we dropped the other OPC on now shows 10.

PET OPCM Use Cases 014

Let's resolve the inconsistencies again.

PET OPCM Use Cases 015

And everything looks green now.

PET OPCM Use Cases 016

When we open PID 002 where we dropped the OPC from PID 001 on and select the valve we see, that 'Drawing Area' of the Pipe Line Group is set to override and the value is set to 10.

PET OPCM Use Cases 017

Disconnecting

Now we check what will happen if we disconnect again.

PET OPCM Use Cases 018

We see, that the 'Area' shows 20 again.

PET OPCM Use Cases 019

When we look again at the properties of the valve we see, that the 'Area' is acquired again and the acquired value is 20.

PET OPCM Use Cases 020

Next Chapter: Disconnecting in Drawing