Omron CRT1 - 10-2008, Operation Manual

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Maintenance Information Section 6-3
CRT1-AD04 Analog Input Units Only
Error History Window
Cumulated Counter
Over Selected when any one of the input’s cumulative counter val-
ues exceeds the set value.
Unit Error Selected when a Unit Error has occurred in an Analog Unit.
Threshold Cumu-
lated Counter Over Selected when the cumulative counter value exceeds the set
value.
Cumulated Counter
Overflow Selected when there is an overflow in the cumulative counter
value.
Cumulated Counter
Underflow Selected when there is an underflow in the cumulative counter
value.
Item Description
Item Description
Over Range/Under
Range Selected when the analog data is above or below the display-
able range.
Alarm Over/Warning
Over Selected when the analog data is above or below the monitor-
ing set values set in the comparator function.
Broken wire Selected when a line is disconnected. (Used only when the
input range is 1 to 5 V or 4 to 20 mA.)
Item Description
Content Displays the contents of the communications errors that have
occurred.
Network Power Volt-
age Displays the power supply voltage being supplied when the
error occurred.
Unit Conduction
Time Displays the total time that the network power supply had
been ON up to when the error occurred.