Omron NT31 NT31C manual Thumbwheel Switches, Bar Graphs, Analog Meters, Broken Line Graphs

	Section
Thumbwheel Switches	Numeric values can be input by incrementing or decrementing each digit with
	the corresponding touch switch (+, –). The input numeric values can also be
	stored in a numeral memory table and notified to the host.
	Thumbwheel switch inputs can be enabled and disabled from the host when an
	interlock bit has been allocated.

Graphs	These are graphics whose display changes in accordance with the numeric val-
	ues stored in numeral memory tables. There are the following four types.
	Bar Graphs
	Bar graphs display the present value in a numeral memory table converted to a
	percentage within the range –100% to +100% of a preset value.
	60%
	Analog Meters
	Analogue meters display, using a quarter, half, or full circle shape, the present
	value in a numeral memory table converted to a percentage within the range
	–100% to +100% of the preset value. Users can choose from moving pointer
	type and filling area type displays. Users can also add graduation to the graph.
	60%
	Broken Line Graphs
	Broken line graphs display, in an easy-to-read form, a sequence of numeral
	memory table values converted to a percentage within the range –100% to
	+100% of a preset value.

100%

0%

–100%

Example showing a series of 11 numeral memory table values (with a check mark set for the display sign)

Trend Graphs

Trend graphs display chronological changes in the value in a numeral memory table, converting the value to a percentage within the range –100% to +100% of a preset value. The trend graph shifts position with the passage of time.

Past data can also be recorded, and the numeral memory table can be read (sampled) even while the trend graph is not being displayed.

The user can choose to stop sampling, restart sampling, or display past data, by pressing touch switches.

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