Data log single record retrieval – Rockwell Automation 1426 PowerMonitor 5000 Unit User Manual
Page 121
Rockwell Automation Publication 1426-UM001F-EN-P - November 2013
121
Logging
Chapter 6
Data Log Single Record Retrieval
A controller or application can sequentially retrieve records from the Data Log
files by following the process described in this section, following these general
tasks.
1.
Read the number of log files from the
table.
2.
table and read the filename from the
LoggingResults.DataLog_FileName
table until the desired log file is
selected.
3.
Write the selected file name into the
table.
4.
Perform sequential reads of the
the results in a suitable location.
The
file contains the following Data Log information:
•
Element 7 and 8, the number of Data Log records
•
Element 9, the number of Data Log files
The
table contains the following elements:
•
Element 0. Write a value of 7 to request the next Data Log file name
•
Element 1: Write a 0 to return the most recent file name first or a 1 to
return the oldest file name first
The
LoggingResults.DataLog_FileName
table returns a string containing the
requested file name. The file name contains the starting date and time of the log
file, as described in
25
DataLog_Parameter_21
Values of user-selected or default
parameters
26
DataLog_Parameter_22
27
DataLog_Parameter_23
28
DataLog_Parameter_24
29
DataLog_Parameter_25
30
DataLog_Parameter_26
31
DataLog_Parameter_27
32
DataLog_Parameter_28
33
DataLog_Parameter_29
34
DataLog_Parameter_30
35
DataLog_Parameter_31
36
DataLog_Parameter_32
Table 20 - Data Log Logged Parameters
Element
Tag Name
Description