Rockwell Automation 9323-S5500D A.I. SERIES MICROLOGIX 1000 AND PLC-500 SOFTW - Manual (Page 412)

MicroLogix 1000 and PLC-500 A.I. Series Software Reference
18-2
!
If you use DII or STI interrupts and your application requires an interrupt latency of
less than 0.50 ms, the online editing feature is not recommended. Online editing
increases the interrupt latency response time beyond 0.50 ms. To ensure that
interrupts are responded to within 0.50 ms, place the keyswitch in the RUN position.
This prevents the use of the online editing feature.
The following diagram represents the process involved in online editing.
Begin Edit
Session
Online Edit
End Edit
Session
Assemble
Edits
Test Edits Untest Edits
Edits
complete
Edits are
unacceptable
Edits are
acceptable
Cancel Edits
Remove edits
Modify edits