Hsc Inputs And Wiring Mapping - Allen-Bradley Micro830 Manual

HSC Inputs and
Wiring Mapping
Rockwell Automation Publication 2080-UM002K-EN-E - March 2019
Use the High-Speed Counter and Programmable Limit Switch Chapter 8
You must set a proper value for the variables OFSetting, HPSetting, and
TIP
UFSetting before triggering Start/Run HSC. Otherwise, the controller will
be faulted. (Setting a value for LPSetting is optional for certain counting
modes.)
To learn more about HscAppData variable input, see
Structure on page
When using HSC function blocks, it is recommended that you:
• set HSCAppData underflow setting (UFSetting) and low preset setting
(LPSetting) to a value less than 0 to avoid possible HSC malfunction
when the HSC accumulator is reset to 0.
• set HSCAppData overflow setting (OFSetting) and high preset setting
(HPSetting) to a value greater than 0 to avoid possible HSC malfunction
when the HSC accumulator is reset to 0.
In some cases, a sub counter will be disabled by master counter mode. See the
section HSC Mode (HSCAPP.HSCMode) on page 140.
HSC0 is used in this document to define how any HSC works.
TIP
The HSC function can only be used with the controller's embedded I/O.
IMPORTANT
It cannot be used with expansion I/O modules.
All Micro830, Micro850, and Micro870 controllers, except 2080-LCxx-xxAWB,
have 100 kHz high-speed counters. Each main high-speed counter has four
dedicated inputs and each sub high-speed counter has two dedicated inputs.
Micro830, Micro850, and Micro870 High Speed Counters
Number of HSC
Main high-speed counters
Sub high-speed counters
High Speed Counter
HSC0
HSC1
HSC2
HSC3
HSC4
HSC5
139.
10/16-point 24-point
2 4
1 (counter 0) 2 (counter 0,2)
1 (counter 1) 2 (counter 1,3)
Inputs used
0, 1, 2, 3
2, 3
4, 5, 6, 7
6, 7
8, 9, 10, 11
10, 11
HSC APP Data
48-point
6
3 (counters 0, 2 and 4)
3 (counters 1, 3 and 5)
135