Rockwell Automation Allen-Bradley Micro850, Оригинальное руководство пользователя

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146 Rockwell Automation Publication 2080-UM002L-EN-E - November 2021
Chapter 8 Use the High-Speed Counter and Programmable Limit Switch
HSC Interrupt POU
This is the name of the Program Organizational Unit (POU) which is executed
immediately when this HSC Interrupt occurs. You can choose any pre-
programmed POU from the drop-down list.
The Auto Start is configured with the programming device and stored as part
of the user program. The auto start bit defines if the HSC interrupt function
automatically starts whenever the controller enters any run or test mode.
The MV (Overflow Mask) control bit is used to enable (allow) or disable (not
allow) an overflow interrupt from occurring. If this bit is clear (0), and an
overflow reached condition is detected by the HSC, the HSC user interrupt is
not executed.
This bit is controlled by the user program and retains its value through a power
cycle. It is up to the user program to set and clear this bit.
The MN (Underflow Mask) control bit is used to enable (allow) or disable (not
allow) a underflow interrupt from occurring. If this bit is clear (0), and a
Underflow Reached condition is detected by the HSC, the HSC user interrupt
is not executed.
This bit is controlled by the user program and retains its value through a power
cycle. It is up to the user program to set and clear this bit.
The MH (High Preset Mask) control bit is used to enable (allow) or disable (not
allow) a high preset interrupt from occurring. If this bit is clear (0), and a High
Preset Reached condition is detected by the HSC, the HSC user interrupt is not
executed.
This bit is controlled by the user program and retains its value through a power
cycle. It is up to the user program to set and clear this bit.
Auto Start (HSC0.AS)
Description Data Format
HSC Modes
(1)
(1) For Mode descriptions, see Count Down (HSCSTS.CountDownFlag) on page 135 .
User Program Access
AS - Auto Start bit 0…9 read only
Mask for IV (HSC0.MV)
Description Data Format
HSC Modes
(1)
(1) For Mode descriptions, see Count Down (HSCSTS.CountDownFlag) on page 135 .
User Program Access
MV - Overflow Mask bit 0…9 read only
Mask for IN (HSC0.MN)
Description Data Format
HSC Modes
(1)
(1) For Mode descriptions, see Count Down (HSCSTS.CountDownFlag) on page 135 .
User Program Access
MN - Underflow Mask bit 2…9 read only
Mask for IH (HSC0.MH)
Description Data Format
HSC Modes
(1)
(1) For Mode descriptions, see Count Down (HSCSTS.CountDownFlag) on page 135 .
User Program Access
MH - High Preset Mask bit 0…9 read only