User Manual Owner manual

126 Rockwell Automation Publication 1715-UM001C-EN-P - March 2014
Chapter 3 Digital I/O Operation
Common Features
The table lists several features available on 1715 digital I/O modules.
Determining Input Module
Compatibility
The 1715 digital input modules interface to sensing devices and detect whether
they are ON or OFF. The 1715 digital input modules convert DC
ON/OFF signals from user devices to appropriate logic level for use within the
1715 Redundant I/O System. Typical input devices include the following:
• Proximity switches
• Limit switches
• Selector switches
• Float switches
• Push button switches
When designing a system by using 1715 digital input modules, you must consider
these items:
• The voltage necessary for your application
• Whether you need a solid state device
• Current leakage
• If your application uses sinking or sourcing wiring
For more information on digital input modules, see the 1715 Technical
Specifications, publication 1715-TD001
.
Termination Assemblies
There are two types of termination assemblies for the digital input modules. The
application of your system determines which termination assembly you need:
• 1715-TASIB16D 16-channel, digital input simplex termination assembly
• 1715-TADIB16D 16-channel, digital input duplex termination assembly
Feature Description
Removal and Insertion Under Power (RIUP) You can remove and insert modules while power is
applied.
Module level fault reporting and field-side
diagnostic detection
Fault and diagnostic detection capabilities that
provide you the information necessary to most
effectively and efficiently use your module and
troubleshoot your application.