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Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, PRIOR to Firmware rev. 3.0 User Manual

Page 146

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Publication 1404-UM001D-EN-E - October 2004

7-14 Data Logging

Interfacing with the Min/Max Log Using Communications

Write Min/max Log configuration settings and command using a table
write to Table A.23 Min/Max Log Configuration/Read-Back Select.

Access data in the Min/max Log using the indexed read method. Write
to Table A.23 to select the read-back mode and/or which of 74
min/max records to return on the next read of Table A.25 Min/Max
Log Results.

Table A.23 contains 9 integer elements:

Password: Required to enable, disable or clear the min/max log;

-1 for selecting a record

Parameter to read: The record number to read next, or the

starting record for auto-increment read-back mode

Read-back mode: 0 selects auto-increment mode; returns the

next min/max record after each read of the results table, 1
selects manual indexed mode (only mode 0, 1 and 2 are
supported by DF1 and Remote I/O communications)

Enable/disable Min/max Log: 0 disables, 1 enables
Clear Min/max Log command: 0 takes no action, 1 clears the log

and writes a time stamp

Timestamp of last Min/max clear: the last four elements store the

last-clear timestamp (read-only; these elements ignored on a
write)