15 - diagnostics, Introduction, View controller diagnostics – Rockwell Automation 1755-OF8 GuardPLC Controller Systems User Manual
Page 139: Chapter 15, Diagnostics, Introduction view controller diagnostics, Chapter
139
Publication 1753-UM001C-EN-P - March 2010
139
Chapter
15
Diagnostics
Introduction
View Controller
Diagnostics
The controller stores short term and long term diagnostics data. The
number of entries the controller can save depends on the controller,
as shown below.
If the memory for short term entries is full and the controller needs to
log another entry, the controller deletes the oldest entry.
If the memory for the long term entries is full and the controller needs
to add a new entry, the controller deletes the oldest entry only if that
entry is more than 7 days old. Otherwise, the new entry is rejected
and a message is displayed in the diagnostics window.
Topic
Page
GuardPLC 1200 Controller Status Indicators
GuardPLC 1600 and GuardPLC 1800 Controllers and GuardPLC
Distributed I/O
GuardPLC 2000 Controller Status Indicators
1755-IB24XOB16 Module Status Indicators
1755-IF8 Analog Input Module Status Indicators
1755-OF8 Analog Output Module Status Indicators
1755-HSC Combination High-speed Counter and Output Module Status
Indicators
Type of Data
GuardPLC 1200
GuardPLC 1600 and 1800
GuardPLC 2000
CPU
COM
CPU
COM
CPU
COM
number of short
term entries
300
700
300
700
300
700
number of long
term entries
1000
200
1000
200
1000
200