Rockwell Automation 1771-VHSC , D17716.5.74 Very High S - Manual (Page 7)

Preface
Using This Manual
This manual shows you how to use the Very High Speed Counter
module with an Allen-Bradley programmable controller. It helps you
install, program, and troubleshoot your module.
You must be able to program and operate an Allen-Bradley
programmable controller (PLC) to make efficient use of this module.
In particular, you must know how to program your PLC for block
transfer-type instructions.
We assume that you know how to do this in this manual. If you do
not, refer to the appropriate programming and operations manual for
the associated programmable controller before you attempt to use
this module.
In this manual, we refer to:
•
the Very High Speed Counter module as the “module,” the
“1771-VHSC” or the “VHSC module.”
•
the programmable controller as the “controller,” or the “PLC.”
This manual is divided into six chapters. The following chart shows
each chapter with its corresponding title and a brief description of
the topics covered in that chapter.
Chapter Title Topics Covered
1 Overview of the Very High Speed Counter Module
Explanation of modes, outputs, default
configuration and how the module communicates
with the processor.
2 Installing the Very High Speed Counter Module
How to install, key, connect wiring, ground and an
explanation of the indicators on the module.
3 Module Programming
Block transfer programming and programming
examples.
4 Configuring Your Module
Configuration and description of bit/words for block
transfer write instructions.
5 Module Status and Input Data
Reading data from the module and bit/word
description of the block transfer read.
6 Troubleshooting
Using the indicators for troubleshooting and
diagnostic codes.
Purpose of This Manual
Audience
Vocabulary
Manual Organization