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

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