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

Shift Function

This function adds (shifts) a set conversion value shift amount to a digital operation value and stores the result in the "digital
operation value". The digital operation value reflects the change in the conversion value shift amount on a realtime basis.
Therefore, fine adjustment can be easily performed when the system starts.
Operation
A set "conversion value shift amount" is added to the "digital operation value". The digital operation value with shift addition is
stored in "digital operation value".
The conversion value shift amount is added in every scan for sampling processing and is added in every averaging process
cycle for averaging processing. After that, the added values are stored in "digital operation value".
When the digital operation value becomes outside the range from -32768 to +32767 as the result of shift processing, the
shifted value is fixed to the lower limit value (-32768) or upper limit value (+32767).
• When the scaling function is used together, the shift processing is executed to the value after scale
conversion.
• When the digital clipping function and scaling function are used together, the shift processing is executed to
the value after digital clipping and scale conversion.
Setting procedure
Set a value for "Conversion value shift amount".
Navigation window  [Parameter]  [Module Information]  Module model name  [Module Parameter]  "Application
Settings"  "Shift Function"
Item
Conversion value shift amount
Corresponding devices
The devices which are used by the shift function are listed below.
Name
Conversion value shift amount
Setting example
Ex.
When the input characteristics is adjusted in a channel where the input range of 0 to 10 V is set by the shift function
Digital output value
16000
15990
0
2 4 6
-10
Voltage input (V)
0
10
CH1 CH2
SD6310 SD6350
Analog input voltage (V)
8 10
Digital output value
0
16000
Setting range
-32768 to +32767
CH3
SD6390
Digital operation value
-10
15990
CH4 Reference
SD6430 Page 84
2 FX5-4AD-ADP
2.3 Functions
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