U90 Ladder is the software tool you use to create applications for M90, M91, and Jazz PLC s. After you plan the control task, use U90 Ladder to write, debug, and download the PLC control and HMI applications into the controller.

Program Editors

The program editors are where you create and edit both the PLC and HMI aspects of your project application.

There are 3 editors:

• Ladder
• Display
• Variable

The Ladder Editor is a program editor. The Display and Variable Editors are HMI editors. Each editor is operated through a different window. You switch between editors via the Standard Toolbar buttons or in the Project Navigator.

When you are working with U90 Ladder, the optimum PC display resolution is 1024 x 768.

Project Navigation Tree

The Project Navigation Tree allows you to navigate easily between components of your program, data types and tools of the U90 Ladder.

Browse Sequences

This U90 Help version contains selected browse sequences. These sequences are arranged by topic to help you make the most out of U90's on-line help. The subject of each sequence appears in the Browse pull-down menu as shown below. The subjects in a browse sequence are arranged from general to most specific.

Below, the browser sequence shown is Getting Started.

Printing Documentation

The topics in this help file are contained in the U90 Ladder Software Manual. This manual can be viewed or printed from the software CD. Note that the help file is always the most current version.

Interface Language

U90 Ladder can be run in a variety of languages, by selecting Language from the View menu, and then clicking on the desired language.

Help

Use the Help browser to learn how to use U90 Ladder effectively. Topics in a browse sequence are classed according to subject. This enables you to see related topics without conducting a search.

The browse sequence shown below is SMS messaging.