Rockwell Automation Publication 2080-UM002K-EN-E - March 2019 301
User Interrupts Appendix D
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.
EII Function Status Information
EII Function status bits can be monitored either in the User Program, or in
Connected Components Workbench, in Debug mode.
EII User Interrupt Executing (EII0.EX)
The EX (User Interrupt Executing) bit is set whenever the EII mechanism
detects a valid input and the controller is scanning the EII POU. The EII
mechanism clears the EX bit when the controller completes its processing of the
EII subroutine.
The EII EX bit can be used in the control program as conditional logic to detect
if an EII interrupt is executing.
EII User Interrupt Enable (EII0.Enabled)
The Enabled (User Interrupt Enable) bit is used to indicate the EII enable or
disable status.
EII User Interrupt Lost (EII0.LS)
LS (User Interrupt Lost) is a status flag that represents an interrupt has been lost.
The controller can process 1 active and maintain up to 1 pending user interrupt
conditions before it sets the lost bit.
This bit is set by the controller. It is up to the control program to utilize or track,
the lost condition if necessary.
Sub-Element Description Data Format User Program
Access
IS - Input Select word (INT) read only
Sub-Element Description Data Format User Program
Access
EX - User Interrupt Executing binary (bit) read only
Sub-Element Description Data Format User Program Access
Enabled - User Interrupt Enable binary (bit) read only
Sub-Element Description Data Format User Program Access
LS - User Interrupt Lost binary (bit) read/write
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