Rockwell Automation Publication 2080-UM002N-EN-E - November 2022
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Appendix C User Interrupts
Using the Event Input
Interrupt (EII) Function
The EII (Event Input Interrupt) is a feature that allows the user to scan a specific POU when an
input condition is detected from a field device.
EII0 is used in this document to define how EII works.
Configure EII Input Edge from the Embedded I/O configuration window.
Configure the EII from the Interrupt Configuration window.
Event Input Interrupt (EII)
Function Configuration and
Status
EII Function Configuration
The Event Input Interrupt Function has the following related configuration parameters.
EII Program POU
This is the name of the Program Organizational Unit (POU) which is executed immediately
when this EII Interrupt occurs. You can choose any pre-programmed POU from the drop-down
list.
EII Auto Start (EII0.AS)
AS (Auto Start) is a control bit that can be used in the control program. The auto start bit is
configured with the programming device and stored as part of the user program. The auto
start bit automatically sets the Event User Interrupt Enable bit when the controller enters any
executing mode.
EII Input Select (EII0.IS)
The IS (Input Select) parameter is used to configure each EII to a specific input on the
controller. Valid inputs are 0…N, where N is either 15, or the maximum input ID, whichever is
smaller.
This parameter is configured with the programming device and cannot be changed from the
control program.
Sub-Element Description
Data Format
User Program Access
AS - Auto Start
binary (bit)
read only
Sub-Element Description
Data Format
User Program Access
IS - Input Select
word (INT)
read only