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IF52
10 – Scaling and linearisation functions
10.1 Scaling the serial readout
Serial readout can be scaled by using the parameters
X Operand
,
/ Operand
and +/- Operand .
Serial Readout SSI encoder data = x
[
xOperand
/Operand
]
+ +/-Operand
For further information refer to page 43.
10.2 Scaling the parallel output data
10.2.1 Converting the SSI encoder data to the parallel output using
neither scaling nor linearisation
When you need to convert the SSI encoder data to the parallel output using
neither scaling nor linearisation, set the parameters as follows:
EXAMPLE
Linearisation Mode
=
0
Round Loop
=
0
Parallel Mode
=
0
(Binary output)
=
1
(Gray coded output)
= 2 (BCD output)
Parallel inversion
=
0
(HIGH signal, normal output polarity)
=
1
(LOW signal, inverted output polarity)
Settings of Linearisation registers are not important in this case.
10.2.2 Converting the SSI encoder data to the parallel output using both
scaling and linearisation
When you need to convert the SSI encoder data to the parallel output using
both scaling and linearisation, set the parameters as follows:
EXAMPLE
In the example a 16-bit SSI encoder provides 2 16 information = 65,536
information which needs to be converted into a 0 – 10,000 range at output.
Linearisation Mode
=
1
MAN IF52 I_E 1.1.odt 10 – Scaling and linearisation functions 53 / 60