Types of ladder diagram blocks, Relays and coils, 9 types of ladder diagram blocks – Nematron Pointe Controller User Manual

Page 173: 1 relays and coils

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Pointe Controller User Guide

Chapter 5: Developing Controller Programs

171

5.9

Types of Ladder Diagram Blocks

To make it easier to select from the 79 available Ladder Diagram blocks, they are
grouped into nine block types or libraries. These libraries can be accessed by
selecting the corresponding tools from the Ladder Diagram toolbar:

Clicking on a library toolbar button will make that library’s own toolbar appear
just below the main Library Diagram toolbar. From there, you can select
individual blocks and place them in your diagram.

TIP: A complete description for each block – including configuration details – can
be found in Appendix C, “Ladder Diagram Block Reference.” Direct page links are
provided below.

5.9.1 Relays and Coils

Selecting this library tool activates the Relays and Coils toolbar, which
allows the placement of relay contacts and coil-type objects in your
ladder diagram.

This library includes the following blocks:

TOOL

DESCRIPTION

FOUND ON...

Normally Open Contact

Page 338

Normally Closed Contact

Page 338

Rising Edge Relay

Page 339

Falling Edge Relay

Page 339

Output Coil

Page 340

Negated Output Coil

Page 341

Latched Coil

Page 341

Unlatched Coil

Page 342

Rising Edge Coil

Page 343

Falling Edge Coil

Page 343

Falling Edge Detector

Page 344

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