55
Functions of Digital I/O Units
Section 4-4
4-4-5
Total ON Time Monitor
Function Overview
The total ON time for each I/O contact can be calculated (unit: s) and
recorded in the Unit. A monitor value can be set in the Unit, and when the total
I/O contact ON time reaches the monitor value, the Connected Device Main-
tenance Flag in the Status Area is turned ON. (Bit 2 of the Communications
Unit’s Status Flags is turned ON.) The Programming Device can be used to
read the status of the Connected Device Maintenance Flag.
• Measured time: 0 to 4,294,967,295 s (stored data: 00000000 to
FFFFFFFF hex)
• Measuring unit: s
Note
1. The Total ON Time Monitor and Contact Operation Counter cannot be
used at the same time for a single contact. Select the function to be used
in the
Detection Mode
Area.
2. The Total ON Time Monitor operates when the I/O power is ON only.
3. The Total ON Time Monitor checks approximately every second whether
the connected devices are ON.
If the total ON time is calculated for ON times of less than a second, the
measurement may not be accurate.
■
Measurement for ON Time of 0.5 s:
In
Figure 1
, the actual ON time is 0.5 s × 3 = 1.5 s. The measurement will be
taken once during this ON time, so the total ON time will be measured as 1 s.
Figure 1
ON
OFF
Total ON time
Recorded in
the Unit
Connected
device
Total ON time
Connected
device
Slice I/O Unit
ON
OFF
Reading taken approximately every second.
0.5 s
Summary of Contents for SMARTSLICE GRT1-DRT
Page 1: ...OPERATION MANUAL Cat No W455 E1 08 SmartSlice GRT1 Series Slice I O Units ...
Page 3: ...SmartSlice GRT1 Series Slice I O Units Operation Manual Revised December 2018 ...
Page 4: ...iv ...
Page 6: ...vi ...
Page 20: ...xx EC Directives 6 ...
Page 62: ...42 Connecting Turnback Cables Section 3 3 ...
Page 250: ...230 Maintenance Information Window Section 7 3 Maintenance Information Window ...
Page 292: ...272 GRT1 CP1 L Positioning Unit Section 7 5 ...
Page 300: ...280 GRT1 END End Unit Section 8 5 Dimensions 11 9 11 9 55 7 1 5 19 5 83 5 2 9 2 9 OMRON ...
Page 322: ...302 Troubleshooting by Unit Section 9 5 ...
Page 350: ...330 Explicit Messages Appendix A ...
Page 354: ...334 Power Consumption and Weight Tables Appendix C ...
Page 356: ...336 I O Current Consumption Table Appendix D ...
Page 364: ...344 Revision History ...
Page 365: ......