Yokogawa Value Series FX1000 - Manual (Page 29)

2-16
IM 04L21B01-64EN
Span (Display Span) and Point
Sets the upper and lower limits of the display.
The range is from –9999999 to 99999999. Set the number of digits to the right the
decimal to four digits or less (0 to 4).
Unit
Enter the unit using up to six characters.
TLOG (TLOG Computation)
Timer
Select the number of the timer that you want to use.
Sum Scale
Set the sum scale to [/s], [/min], [/h] to match the unit of the measured value.
Example: If the unit of the measured value is “m
3 /min,” select [/min].
If you select [OFF], the measured data is summed as-is once per scan interval.
Reset
To reset the TLOG computed value at each interval, select [ON].
Alarm and Tag
The setting operation is the same as that for setting the measurement channels. See
section 2.3, “Setting the Measurement Channels.”
Rolling Average
ON/OFF
To take the rolling average of the measured results, select [ON].
Interval
Select the sampling interval when taking the rolling average from the following: The
sampling interval takes on a value that is an integer multiple of the scan interval. For
example, if the sampling interval is set to 5 s when the scan interval is 2 s, the actual
sampling interval is 6 s.
Count (Number of samples)
Set the number of samples for the rolling average using an integer between 1 and 1500.
The rolling average time is equal to the sampling interval × the number of samples.
Note
FX Specifications
• If the number of data points to be averaged has not reached the specified number of samples
immediately after computation is started, the average of the available data is calculated.
• Computation error data is excluded from the rolling average computation.
• If the computed data exceeds the upper or lower limit, the data is clipped at the upper or
lower limit, and the rolling average is computed. The upper and lower limit is “±100000000”
excluding the decimal point. The decimal place is the same as that of the span lower limit.
Memory Sampling, Zone, Graph, Partial, Color, Green Band, and Alarm Mark
The setting operation is the same as that for setting the measurement channels. See
section 2.3, “Setting the Measurement Channels.”
Constant
You can set constants to be used in the expression. Up to 60 constants can be specified.
2.4 Setting the Computation Channels