YOKOGAWA FX103 User Manual

IM 04L20A01-01E
1-44
• Computation data dropout
Computation data dropout occurs when the computation is not completed within the
scan interval.
• The computation icon displayed in the status display section turns yellow.
• When computation data are acquired to the internal memory, the data immediately
before a computation drop out are substituted for the computation data at the time
of the dropout.
• When this occurs frequently, lower the CPU load by reducing the number of
computation channels or making the scan interval longer.
Alarm
You can set up to 4 alarms on each computation channel. The alarm types are upper
limit alarm (H), lower limit alarm (L), delay upper limit alarm (T), and delay lower limit
alarm (t). The hysteresis is fixed to 0.
Acquiring and Saving the Computed Data
Similar to measured data, computed data can be acquired to the internal memory as
display data or event data and saved to the external storage medium.
For a description on data saving, see section 1.5, “
Data Storage Function .”
Other Functions
• Rolling average
The moving average of the computed result of the equation specified for the
computation channel is determined, and the result is displayed as computed data for
that channel. The sampling interval and the number of samples can be specified for
each channel. The maximum sampling interval is 1 hour ; the maximum number of
samples is 250. The initial setting is [Off] (do not perform moving average).
Note
• While the number of samples acquired is less than the specified number of samples, the
average of acquired data is computed.
• The computation error data are not included in 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 moving average is computed. The upper and lower limit is ±100000000
excluding the decimal point. The decimal point position is the same as that of the specified
value for the span lower limit.
• TLOG data
The instantaneous values of all channels (excluding measurement channels set to
Skip and computation channels set to Off) can be saved at intervals specified by a
timer.
Note
TLOG computed data and TLOG data are not the same. TLOG computed data refers to the
result of the TLOG computation. TLOG data refers to the measured/computed data of all
channels acquired at specified intervals.
1.6 Computation Function and Report Function (/M1, /PM1 Option)

YOKOGAWA FX103 Specifications

General

Brand	YOKOGAWA
Model	FX103
Category	Controller
Language	English