Processing Of Each Function - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Processing of each function

The functions are processed in the order shown below depending on the mode. If multiple functions are enabled, the output of
the first processed function is used as the input of the next function.
• Normal mode
Disconnection
Analog input
detection
(CH1 to CH16)
function
Refer to
4.8 Disconnection
Detection Function
Input signal
error detection
function
Refer to
4.9 Input Signal
Error Detection
Function
For the resistance temperature detector input range, or thermocouple input range, the conversion is stopped
when a disconnection is detected. The digital output value, digital operation value, logging data, maximum
value, and minimum value in this case are as follows:
• Digital output value: The values are stored according to the setting in conversion setting at disconnection
detection.
• Digital operation value: The calculated values are stored according to the scaling function and shift function
in digital output value.
• Logging data: The digital output values or digital operation value are stored according to the logging data
setting
• Maximum value and minimum value: The values are updated with the maximum and minimum values of the
digital operation value
In the use of the input signal error detection function, conversion is stopped if an input signal error is detected.
In this case, the digital output values, digital operation values, and maximum and minimum values are not
updated. The values obtained before the input signal error is detected are held. Conversion is resumed after
restoration from the errors in the input signal. The digital output value or digital operation value before the
input signal error was detected is stored in logging data depending on the logging data setting.
• 2CH conversion mode
Sampling
Analog input
processing
(CH1 to CH8)
3 FX5-8AD
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3.4 Functions
A/D conversion
method
Sampling
processing
Digital clipping
Rate
function
alarm
Count average
Scaling function
Time average
Process
Moving average
alarm
Shift function
CH Digital
output value
CH Digital
operation value
CH Maximum
value
Maximum value/
minimum value
hold function
CH Minimum
value
Alert output
Maximum value/
Logging function
function Minimum value
hold function
CH Digital
output value
CH
Maximum value
CH
Minimum value
CH Digital
operation value
CH
Logging data