Rockwell Automation 1756-IH16ISOE ControlLogix Sequence of Events Module - Manual (Page 54)

Publication 1756-UM528A-EN-P - April 2004
5-2 Using the Sequence of Events Module Features
Determining Module
Compatibility Primarily, a Sequence of Events module is used to timestamp input
data. However, additionally, the module interfaces to sensing
devices and detects whether they are ON or OFF. The module also
converts ON/OFF signals from user devices to appropriate logic
level for use in the processor. Typical input devices include:
• auxiliary contacts
• limit switches
When designing a system using Sequence of Events modules, you
must consider:
• the voltage necessary for your application
• whether you need a solid state device
• current leakage
• if your application should use sinking or sourcing wiring.
For more information on compatibility of other Rockwell
Automation products to Sequence of Events modules, see the I/O
Systems Overview, publication CIG-SO001.
There are two types of features available on the Sequence of
Events module:
• Module Features That Can Be Configured - Features that can be
adjusted to make sure the module operates as efficiently as
possible in your application (e.g., input filter times)
• Other Inherent Module Features - Features that cannot be
changed but are still crucial to module functionality (e.g.,
producer/consumer model)