21
Functions Shared by all Units Section 2-3
• Measuring unit: 0.1 hr
Note (1) The Unit conduction time monitor (Power ON time monitor) calculates the
total time that Network power supply is ON. The total time is not calculat-
ed when the power is OFF.
(2) When the power ON time reaches 87672 hours (10 years), the corre-
sponding bit (Unit Maintenance Flag) of the Status Flags turns ON, re-
gardless of the threshold value.
(3) After the power ON time reaches 87672 hours (10 years), the power On
time count continues while the power is ON, but when the power is turned
OFF and then ON, the count resumes from 87671.
Setting with a
Programming Device
This example shows how to use the DeviceNet Configurator (version 2.43 or
higher) to set the monitor value for the Unit Conduction Time.
1,2,3... 1. Open the Network Configuration Window and double-click the desired
Slice I/O Terminal’s icon or right-click the icon and select Parameters -
Edit to display the Edit Device Parameters Window.
Host Master
Total ON time
Internal circuit
power
ON
OFF
Communications
Unit
Recorded in Unit
Corresponding bit
turned ON when
monitor value is
exceeded.
Corresponding bit is turned
ON in the Communications
Unit's status flags.
Slice I/O Unit
ON
OFF
87671 hours
Total ON time
Internal circuit
power supply
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