Chapter 11 Monitoring
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11.7 Trend Monitoring
Trend monitoring is used to read the data periodically from PLC connected so to display in a graph. The
trend monitoring window is composed of bit graph and trend graph. In the bit graph, bit device’s On/Off
status is displayed in stair-shaped graph. And in the trend graph, the variation trend of the data is displayed
with the device value converted from word to data format specified.
11.7.1 Start Trend Monitoring
[Steps]
1. Connect to the PLC.
2. Select [Monitoring]-[Trend Monitoring] on the menu.
[Trend Monitoring Window]
[Description of Trend Monitoring Window]
a. Bit graph: displays the data of bit device.
b. Bit graph index: displays the bit graph and graph colors.
c. Bit graph present value: displays the present value of the bit device.
d. Trend graph: displays the data of word device.
e. Trend graph index: displays the word device and graph colors.
f. Trend graph present value: displays the present value of word device.
a
b
d
e
c
f
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