Functional Description
AP20S
Date: 24.08.2020
Art. No. 89992
Mod. status 133/20
Page 16 of 79
Bit Meaning
Value = 0
Value = 1
1
reserved
ever 0
-
2
Display data activation (display
line 1)
-
Activate Display data
3
Display range
standard
extended
4
reserved
ever 0
-
5
Error acknowledge
-
Acknowledge error
6
Target value acknowledgment
mode (display line 2)
Manually acknowledge
target value
Acknowledge target value
7
Target value data type (display
line 2)
Interpret target value
as a number
Interpret target value as
ASCII character
8
Display data type (display line
1)
Interpret display data
as a number
Interpret display data as
ASCII character
9
Target value activation (display
line 2)
-
Activate target value
10
Display data acknowledgment
mode
Manually acknowledge
display data
Acknowledge display data
11
LED1 green
Function
controlled via
parameters
LED1, LED2
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 6: Control word alpha-numeric display operating mode
3.1.6
Status word: Alpha-numeric display operating mode
The response to a target write command contains a status word that has not
yet been updated.
Type, validity and acknowledgment status of the target values are fed back in the status word.
The status word is composed of 16 bits.
Status 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
reserved
ever 0
-
1
reserved
ever 0
-
2
Display data activation
(display line 1)
Display data deactivated
Activate display data
3
Target value
acknowledged (display
line 2)
Target value not
acknowledged
Target value acknowledged
4
reserved
ever 0
-