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Operations from the Edit Device Parameters Window
Section 5-2
the total time exceeds the set monitor value, the Temperature Controller Main-
tenance Bit in the Unit Status Area will be turned ON.
These monitors provide a guideline for when to replace the Temperature Con-
trollers.
Set whether to total the Unit conduction time or RUN time using the MONI-
TOR mode.
Measuring unit: 0.1 h (The Configurator display is in 1-h units.)
Measured time: 0 to 429496729 h
(stored data: 00000000 to FFFFFFFF hex)
Monitor value setting range: 0 to 429496729 hours
The present values for the conduction time or RUN time, and the Unit status
can be checked from the Maintenance Mode Window.
Note
1.
The present values and monitor values for conduction time or RUN time
are stored even when the power is turned OFF.
2.
The conduction time monitor and total RUN time monitor cannot be used
at the same time for a single channel.
3.
The total time is not calculated when the communications power to the De-
viceNet Communications Unit is turned OFF.
4.
The DeviceNet Communications Unit checks the ON/RUN status of the
specified Temperature Controller approximately every 0.1 hour (6 min-
utes). Depending on the measurement timing, the accurate may not be ob-
tained due to the timing interval, as shown in the following examples.
Example 1: Using the Unit conduction time monitor when communications power is turned ON and
OFF for three minutes each (A)
In the above diagram, the actual conduction time is 3 minutes
×
3 = 9 minutes,
but the status is ON only once at the time the measurement is taken, so the
conduction time is calculated as 6 minutes.
Example 2: Using the Unit conduction time monitor when communications power is turned ON and
OFF for three minutes each (B)
In the above diagram, the actual conduction time is 3 minutes
×
3 = 9 minutes,
but the status is ON only twice at the time the measurement is taken, so the
conduction time is calculated as 12 minutes.
Example 3: Using the Unit conduction time monitor when communications power is turned ON for 9
minutes, OFF for 3 minutes, and ON for 9 minutes
ON
OFF
3 min
Calculates ON time
every 6 min approx.
OFF
3 min
ON
Calculates ON time
every 6 min approx.
9 min
OFF
ON
Calculates ON time
every 6 min approx.
Summary of Contents for EJ1 - 07-2008
Page 3: ...iv...
Page 19: ...xx...
Page 33: ...14 Initial Temperature Controller Settings Section 1 4...
Page 53: ...34 Wiring the Temperature Controllers Section 3 4...
Page 101: ...82 Ladder Programming Examples Section 4 6...
Page 143: ...124 Sending Explicit Messages Section 6 5...
Page 155: ...136 Message Communications Characteristics Section 7 2...
Page 163: ...144 Maintenance Section 8 2...
Page 189: ...170 Allocation Numbers for Configurators Manufactured by Other Companies Appendix B...
Page 197: ...178 Index...