Use The High-Speed Counter And Programmable Limit Switch; High-Speed Counter Overview; Programmable Limit Switch Overview - Allen-Bradley Micro830 Manual

High-Speed Counter
Overview
Programmable Limit Switch
Overview
Rockwell Automation Publication 2080-UM002K-EN-E - March 2019
Use the High-Speed Counter and
Programmable Limit Switch
All Micro830, Micro850, and Micro870 controllers, except for
2080-LCxx-AWB, support up to six high speed counters (HSC). The HSC
feature in Micro800 consists of two main components: the high-speed counter
hardware (embedded inputs in the controller), and high-speed counter
instructions in the application program. High-speed counter instructions apply
configuration to the high-speed counter hardware and updates the accumulator.
ATTENTION: To use the Micro800 HSC feature effectively, you need to
have a basic understanding of the following:
• HSC components and data elements.
The first sections of the chapter provides a detailed description of these
components. Quickstart instructions (see page 247) are also available to
guide you through setting up a sample HSC project.
• Programming and working with elements in Connected Components
Workbench.
The user needs to have a working knowledge of programming through
ladder diagram, structured text, or function block diagram to be able to
work with the HSC function block and variables.
ATTENTION: Additional information is available on the HSC function
block and its elements in the Connected Components Workbench
Online Help that comes with your Connected Components Workbench
installation.
This chapter describes how to use the HSC function and also contains sections
on the HSC and HSC_ SET_STS function blocks, as follows:
• High Speed Counter (HSC) Data Structures
• HSC (High Speed Counter) Function Block
• HSC_SET_STS Function Block
• Programmable Limit Switch (PLS) Function
• HSC Interrupts
The Programmable Limit Switch function allows you to configure the
High-Speed Counter to operate as a PLS (Programmable Limit Switch) or rotary
cam switch. For more information, see
Function on page 159.
Programmable Limit Switch (PLS)
8
Chapter
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