Publication 1766-RM001A-EN-P - October 2008
Using the High-Speed Counter and Programmable Limit Switch 101
The HSC is extremely versatile; the user can select or configure the master
HSC for any one of ten (10) modes and the sub HSC for any one of five
(5) modes of operation.
Operating Modes are discussed later in this chapter. See the section HSC
Mode (MOD) on page 116. Some of the enhanced capabilities of the
High-Speed Counters are:
• 100 kHz operation
• High-speed direct control of outputs
• 32-bit signed integer data (count range of ± 2,147,483,647)
• Programmable High and Low presets, and Overflow and Underflow
setpoints
• Automatic Interrupt processing based on accumulated count
• Run-time editable parameters (from the user control program)
The High-Speed Counter function operates as described in the following
diagram.
+2,147,483,647 maximum
-2,147,483,648 minimum
Overflow
High Preset
0
Low Preset
Underflow
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