What This Chapter Contains; What Is The Controllogix High Speed Counter Module - Rockwell Automation Allen-Bradley ControlLogix 1756-HSC User Manual

W hat This Chapter Contains
W hat is the ControlLogix
High Speed Counter
M odule?
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What is the ControlLogix
High Speed Counter M odule?
This chapter describes the ControlLogix HSC module and what you
must know and do before you begin to use it.
For information about:
What is the ControlLogix High Speed
Counter Module?
Using An High Speed Counter M odule in the
ControlLogix System
Features of the ControlLogix High Speed
Counter Modules
Preventing Electrostatic Discharge
Removal and Insertion Under Power
Chapter Summary and What's Next
The ControlLogix HSC module is an intelligent I/O module providing
four high speed output switching, ON-OFF windows, and using
pulses from quadrature encoders, pulse generators, proximity
switches and other similar products for counting or frequency.
These high speed digital outputs are dedicated to one of two
rotational position sensors and not affected by any changes occurring
in the ControlLogix controller. The module outputs provide consistent
switch ON and switch OFF times for repeatable speed compensation.
Using the producer/consumer network model, controllers can
produce information for any controller that may use it. A single
encoder may drive multiple modules as long as it provides the
minimum current required for each module.
The HSC is a single-slot module that requires a separate external
power supply for its outputs. For more information on specific voltage
and current requirements, see the specifications listed in Appendix A.
Chapter
See page:
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Publication 1756-UM 007A-EN-P - October 2000
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