Maximum Value/Minimum Value Hold Function - Mitsubishi Electric MELSEC iQ-F FX5 User Manual

Maximum value/minimum value hold function

Stores the maximum and minimum values of digital operation values to the buffer memory area for each channel.
Resetting the maximum value and the minimum value
The maximum and minimum values can be reset to the current value by performing the following processing.
■Resetting the maximum value
When 'CH1 Maximum value reset request' (Un\G473) turns on (1), 'CH1 Maximum value' (Un\G404) is updated with current
value, and 'CH1 Maximum value reset completion flag' (Un\G422) turns on (1).
■Resetting the minimum value
When 'CH1 Minimum value reset request' (Un\G474) turns on (1), 'CH1 Minimum value' (Un\G406) is updated with current
value, and 'CH1 Minimum value reset completion flag' (Un\G423) turns on (1).
■Resetting the maximum value and the minimum value
The following two types of average processing of the maximum value and minimum value are provided.
• Perform "Reset Maximum value" and "Reset Minimum value" respectively.
• 'CH1 Maximum value' (Un\G404) and 'CH1 Minimum value' (Un\G406) are updated with the current value when 'Operating
condition setting request' (Un\G70, b9) turns on (1). 'CH1 Maximum value reset completion flag' (Un\G422) and 'CH1
Minimum value reset completion flag' (Un\G423) are not ON (1).
If "A/D conversion disable" is set in 'CH1 A/D conversion enable/disable setting' (Un\G500), 0 is stored in both
'CH1 Maximum value' (Un\G404) and 'CH1 Minimum value' (Un\G406).
Values to be the maximum value and the minimum value
The maximum and minimum values of digital operation values are stored in the buffer memory.
Using the averaging processing or the digital clipping, scaling, shift, or difference operation function results in storage of the
maximum and minimum values of the digital operation values calculated by each function.
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1 FX5-4AD
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1.4 Functions