Allen-Bradley Micro800 General Instructions Manual page 338

Chapter 14
High-Speed Counter (HSC) instructions
338
To configure an HSC interrupt
1. In Interrupt Type, select High-Speed Counter (HSC) User Interrupt.
2. Select the properties:
HSC Interrupt properties
3. Select the parameters:
HSC Interrupt parameters
HSC Interrupt properties
The HSC Interrupt properties status bits indicate the enabled/disabled status, the
execution status, and whether or not the interrupt condition is lost.
User Interrupt Enable (HSC0.Enabled)
Parameter
HSCO.Enabled
Enabled bit is used to indicate HSC interrupt enable or disable status.
User Interrupt Executing (HSC0.EX)
Parameter
HSCO.Ex
The EX (User Interrupt Executing) bit is set (1) whenever the HSC sub-system
begins processing the HSC subroutine due to any of the following conditions:
•
Low preset reached
•
High preset reached
•
Overflow condition - count up through the overflow value
•
Underflow condition - count down through the underflow value
The HSC EX bit can be used in the control program as conditional logic to detect
if an HSC interrupt is executing.
The HSC sub-system will clear (0) the EX bit when the controller completes its
processing of the HSC subroutine.
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015
on page 338
on page 339.
Data format HSC modes
bit 0...9
Data format HSC modes
bit 0...9
User program access
read only
User program access
read only