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2display basics, 1 overview – Micromod MOD: 30ML Display Script Guide User Manual

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Display Basics

2.1 Overview

The only real limit to the number of display “pages” is database memory. Practical
considerations such as operator preferences and plant philosophy will be the determining
factors in the number of displays created for a single controller.

There are two basic methods of configuring a MOD 30ML display:

• using pre-defined compounds that contain a complete loop and associated display
• creating a control strategy and building a custom display

It is often possible to start with a pre-defined compound from the Gallery and modify it to
fit the particular application. This manual includes examples of both of the above
methods.

There are several blocks in the MOD 30ML database that are specific to front panel
displays. They are the Display Block, the Display Interface Block, the State Table Block,
Tune List blocks and Process Alarm Display blocks.

Figure 2 .1.

Display Block
Relationships

Each ‘page’ that you wish to display on the front face of the controller corresponds to one
Display Block (DISP). This is where the attributes are defined that will appear on the
display. One algorithm block, such as a PID, may have one or more display blocks.
Conversely, one Display Block may contain elements from one or more algorithm blocks.