Function List - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Function list

This section lists the functions of analog input modules.
Item
Operation mode
Range switching function
A/D conversion enable/disable setting function
A/D conversion Sampling processing
method
Averaging Time average
processing
Count average
Moving average
Primary delay filter
Digital filter
Scaling function
Shift function
Digital clipping function
Difference operation function
Maximum value/minimum value hold function
Alert output Process alarm
function
Rate alarm
Input signal error detection function
Logging function
Logging read function
Interrupt function
Error history function
Offset/gain setting function
Offset/gain initialization function
FX3 allocation mode function
Description
Select the operation mode (normal mode, offset/gain setting mode) of the analog input
module.
Allows switching the input range of an analog input for each channel. Switching the range
makes it possible to change the input conversion characteristic.
Controls whether to enable or disable the A/D conversion for each channel. Disabling A/D
conversion for unused channels reduces the conversion cycles.
Converts analog input values into digital at every sampling period, storing them in buffer
memory areas.
Executes A/D conversion for the set time and performs the averaging processing on the
total value excluding the maximum and minimum values. The processed values are
stored in the buffer memory area. The number of processing times within the set time
changes depending on the number of channels where A/D conversion is enabled.
Executes A/D conversion for a set number of times and performs the averaging
processing on the total value excluding the maximum and minimum values. The
processed values are stored in the buffer memory area. The time taken to store the count
average value obtained by the processing in the buffer memory area varies depending on
the number of channels where the conversion is enabled.
Averages digital output values taken at every sampling period for a specified number of
times, and stores the averaged value in the buffer memory area. The target range for
averaging processing moves at each sampling processing, thereby allowing the latest
digital output value to be obtained.
Performs digital output where the transient noise of analog input is smoothed depending
on the set time constant, and stores the value in the buffer memory area.
Removes the fluctuation below the set value when the measurement signal includes
noise such as a steep spike and stores the resulting stable data in the buffer memory.
Performs scale conversion on digital output values within the range from a scaling upper
limit value to a scaling lower limit value, both of which are set at desired values. This
function helps reduce the man-hours taken for creating a scale conversion program.
Adds (shifts) a set conversion value shift amount to a digital output value, and stores the
result in the buffer memory area. A change in conversion value shift amount is reflected to
the digital operation value in real time, which facilitates fine adjustment at system start-up.
Fixes a possible digital operation value to the maximum digital output value or the
minimum digital output value when an input current or voltage exceeds the input range.
The digital operation value at the start of this function is treated as 0 (reference value).
Thereafter, values that increased or decreased from the reference value are stored in the
buffer memory.
Stores the maximum and minimum values of digital operation values in the buffer memory
area for each channel.
Outputs an alert when a digital operation value falls within the preset alert output range.
This function outputs an alert when the change rate of a digital output value is equal to or
greater than the rate alarm upper limit value, or the rate is equal to or smaller than the rate
alarm lower limit value.
Outputs an alarm when an analog input value exceeds the preset range.
Logs (records) digital output values or digital operation values. 10000 points of data can
be logged for each channel.
After logging starts, an interrupt request is sent to the CPU module and an interrupt
program is executed every time the preset number of data to be read is logged.
Executes an interrupt program of the CPU module when an interrupt factor such as an
input signal error or alarm output is detected.
Records up to 16 errors and alarms that occurred in an analog input module to store them
in the buffer memory areas.
Allows the correction of errors in digital output values.
Initializes the offset and gain values to the factory defaults.
Converts the layout of buffer memory addresses of an analog input module to the one
equivalent to FX3U-4AD. This compatibility enables the reuse of programs that have
proven performance on FX3U-4AD.
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Reference
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1 FX5-4AD
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1.4 Functions