Siko AP20S, User Manual, Page: 10 / 79

Functional Description
AP20S
Date: 24.08.2020 Art. No. 89992 Mod. status 133/20 Page 10 of 79
3 Functional Description
3.1 Operating modes
The following position-dependent operating modes are differentiated:
Absolute position
,
Differential value , Modulo and the position-independent operating mode Alpha-numeric
display .
3.1.1 Position-bound operating modes
The measured absolute position value is displayed, calculated depending on the Resolution,
Display Divisor, Decimal Places and Display Factor parameters. Via the interface, the actual
value can be provided to an upstream control and a target value specified.
Absolute position:
Linear absolute actual values are displayed
Line 1: actual value; CW.9 = 0, 2. Line: "
----
" or CW.9 = 1, Line 2: target value
Calculation of the actual value:
Actual value =
Position value x calculation factor
Display divisor
Position value = internally measured value + calibration value + offset value
Differential value display:
A linear absolute actual value and a differential value are displayed. The differential value is
calculated as follows: Differential value = actual value – target value.
Line 1: actual value; CW.9 = 0, 2. Line: "
----
-" or CW.9 = 1, Line 2: Differential value
The calculation of the differential value can be set via the parameter Difference Value Mode
(see chapter
4.5.8 ).
Modulo display:
Actual values ranging from 0° to 360° are displayed.
Line 1: actual value; CW.9 = 0, 2. Line: "
----
" or CW.9 = 1, Line 2: target value
Using the parameter Decimal Places (see chapter 4.2.2 ) the resolution and the modulo point
of the displayed values are set.
Decimal places Display resolution Value range
0 1° 0°…360°
1 1/10° 0.0°…360.0°
2 1/100° 0.00°…360.00°
3 1/1000° 0.000°…360.000°
4 1/10000° 0.0000°…360.0000°
Table 1: Modulo display