Rockwell Automation Publication 2080-UM002N-EN-E - November 2022 301
Appendix C User Interrupts
For example, to enable EII Event 1 and EII Event 3:
EII Event 1 = 4, EII Event 3 = 16
4 + 16 = 20 (enter this value)
UIF - User Interrupt Flush
The UIF instruction is used to flush (remove pending interrupts from the system) selected user
interrupts. The table below shows the types of interrupts with their corresponding flush bits:
To flush interrupts:
1. Select which interrupts you want to flush.
2. Find the Decimal Value for the interrupt(s) you selected.
3. Add the Decimal Values if you selected more than one type of interrupt.
4. Enter the sum into the UIF instruction.
For example, to disable EII Event 1 and EII Event 3:
EII Event 1 = 4, EII Event 3 = 16
4 + 16 = 20 (enter this value)
Table 75 - Types of Interrupts Disabled by the UIF Instruction
Interrupt Type Element Decimal Value Corresponding Bit
Plug-In Module UPM4 8388608 bit 23
Plug-In Module UPM3 4194304 bit 22
Plug-In Module UPM2 2097152 bit 21
Plug-In Module UPM1 1048576 bit 20
Plug-In Module UPM0 524288 bit 19
STI - Selectable Timed Interrupt STI3 262144 bit 18
STI - Selectable Timed Interrupt STI2 131072 bit 17
STI - Selectable Timed Interrupt STI1 65536 bit 16
STI - Selectable Timed Interrupt STI0 32768 bit 15
EII - Event Input Interrupt Event 7 16384 bit 14
EII - Event Input Interrupt Event 6 8192 bit 13
EII - Event Input Interrupt Event 5 4096 bit 12
EII - Event Input Interrupt Event 4 2048 bit 11
HSC - High-Speed Counter HSC5 1024 bit 10
HSC - High-Speed Counter HSC4 512 bit 9
HSC - High-Speed Counter HSC3 256 bit 8
HSC - High-Speed Counter HSC2 128 bit 7
HSC - High-Speed Counter HSC1 64 bit 6
HSC - High-Speed Counter HSC0 32 bit 5
EII - Event Input Interrupt Event 3 16 bit 4
EII - Event Input Interrupt Event 2 8 bit 3
EII - Event Input Interrupt Event 1 4 bit 2
EII - Event Input Interrupt Event 0 2 bit 1
UFR - User Fault Routine Interrupt UFR 1 bit 0 (reserved)
UIFUIF
UIF (name or Pin ID)
or ENO(Pin ID)
Enable
IRQType
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