Publication 1762-RM001C-EN-P
Using Interrupts 18-17
Using the Event Input
Interrupt (EII) Function
File
The EII (event input interrupt) is a feature that allows the user to scan a
specific program file (subroutine) when an input condition is detected
from a field device.
Within the function file section of RSLogix 500, the user sees an EII folder.
Within the folder are four EII elements. Each of these elements (EII:0,
EII:1, EII:2, and EII:3) are identical; this explanation uses EII:0 as shown
below.
Each EII can be configured to monitor any one of the first eight inputs
(I1:0.0/0 to I1:0.0/7). Each EII can be configured to detect rising edge or
falling edge input signals. When the configured input signal is detected at
the input terminal, the controller immediately scans the configured
subroutine.
Event Input Interrupt (EII) Function File Sub-Elements Summary
Table 18.12 Event Input Interrupt Function File (EII:0)
Sub-Element Description Address Data Format Type User Program
Access
For More
Information
PFN - Program File Number EII:0.PFN word (INT) control read only 18-18
ER - Error Code EII:0.ER word (INT) status read only 18-18
UIX - User Interrupt Executing EII:0/UIX binary (bit) status read only 18-18
UIE - User Interrupt Enable EII:0/UIE binary (bit) control read/write 18-19
UIL - User Interrupt Lost EII:0/UIL binary (bit) status read/write 18-19
UIP - User Interrupt Pending EII:0/UIP binary (bit) status read only 18-19
EIE - Event Interrupt Enabled EII:0/EIE binary (bit) control read/write 18-20
AS - Auto Start EII:0/AS binary (bit) control read only 18-20
ED - Error Detected EII:0/ED binary (bit) status read only 18-20
ES - Edge Select EII:0/ES binary (bit) control read only 18-21
IS - Input Select EII:0.IS word (INT) control read only 18-21
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