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4-90

Chapter 4. Functions

Linear approximation can be used for analog input, analog output, time proportioning output, and position

proportioning output. There are eight linearization groups. Each linearization group has 10 setting points.

Two types of linear approximation are available, one by specifying breakpoints and another by specifying the bias,

and the type is selected using the "Operation type" setting of the linearization table bank.

Handling Precautions

• If the version of the MAIN block firmware precedes 5.x.x (where x stands for

any number), no "Operation type" setting is available, and linearization is

performed by specifying breakpoints only.

• If the version of the MAIN block firmware is 6.x.x or later (where x stands

for any number), linearization table group definition by DI (digital input) is

available in linear approximation for the AO-C and V-P blocks.



Linearization by specifying breakpoints

The input values for linear approximation are the breakpoint settings A1 to A10,

and the output values for linear approximation are breakpoint settings B1 to B10,

and these appear as shown in the graph below.

Input at A1 or before results in output of B1.

Input at A10 or after results in output of B10.

B10

A2 A3 A4 A5 A6 A7 A8 A9 A10

Input (A)

Output (B)

4 - 16 Linear Approximation

Azbil C7G User Manual

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