Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual page 444

Temperature Input Terminals
Data Comparison between
Channels
4. A threshold count value (time in seconds) can be set in the Threshold Zone
Counter field to indicate when the temperature has been in the tempera-
ture zone longer than the threshold setting.
5. Return to the General Tab, click the Download Button, and then click the
Reset Button to reset the Unit.
6. Click the OK Button and exit the window.
This function can be used to compare the temperature values in any two
inputs (inputs 0 to 3) and monitor the relative temperature difference. A
threshold value can be set to detect an excessive temperature difference for
preventative maintenance in devices in which the temperature difference may
cause or indicate a problem.
The comparison result and over-threshold status can be read in the Mainte-
nance Information Window or via an explicit message.
Note 1. The comparison operation can be performed only on the data set as Tem-
perature Data 2.
2. When the "peak value" or "bottom value" is selected as the temperature
data for Temperature Data 2, that processed value will be used in the com-
parison operation and not the actual temperature input value.
Section 7-6
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