Functional Description
AP20S
Date: 24.08.2020
Art. No. 89992
Mod. status 133/20
Page 13 of 79
Fig. 5: Positioning Loop CW
3.1.2
Control word: Position-dependent operating modes
The control word consists of 16 bits and differs in function depending on the operating mode.
Control word
15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
MSB High Byte
Low Byte LSB
The designation of the individual bits of the control word as well as their meaning:
Bit Meaning
Value = 0
Value = 1
0
Calibration execute
-
Trigger calibration (edge-
controlled, positive)
1
reserved
ever 0
-
2
reserved
ever 0
-
3
Display range
Normal display area
Extended display area
4
reserved
ever 0
-
5
Error acknowledge
-
Acknowledge error
6
reserved
ever 0
-
7
reserved
ever 0
-
8
reserved
ever 0
-
9
Target value activation
-
Activate target value
10
reserved
ever 0
-
11
LED1 green
Release via LED
parameters
required
Deactivate LED
Activate LED
12
LED1 red
Deactivate LED
Activate LED
13
LED2 green
Deactivate LED
Activate LED
14
LED2 red
Deactivate LED
Activate LED
15
LED blinking
Deactivate LED
Activate LED
Table 3: Control word operating mode Abs, Diff, Modulo
Positioning: loop CW
Loop length
Counterclockwise positioning
Clockwise positioning
CCW
CW
Target value
Target window