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)
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