WAGO-I/O-SYSTEM 750
Process Image
33
750-469 2AI Thermocouple
Manual
Version 1.1.0
4.2
Data Format with Status Information for S5 – FB 250
in Data Word
For the 750-469/000-200 and 750-469/000-206 variations, the temperature values
of the sensors are represented with a resolution of 1 digit per 0.125 °C within a
word (16 bits). Thus, 0 °C corresponds to the numeric value 0x0000 and 100 °C to
0x0320 (dec. 800). Diagnostic information is indicated in the 3 low bits.
Table 26: Process Image 750-469/000-200, Type K, with broken wire diagn.
Temperature
°C
Numercial value
1)
Status-
byte
hex.
LED
Error
AI 1, 2
binary
XFÜ
hex.
dec.
< ca.-100.0
'1111.1100.1101.1
001'
0xFCD9
-807
0x41
on
-100.0
'1111.1100.1110.0
000'
0xFCE0
-800
0x00
off
-50.0
'1111.1110.0111.0
000'
0xFE70
-400
0x00
off
0.0
'0000.0000.0000.0
000'
0x0000
0
0x00
off
50.0
'0000.0001.1001.0
000'
0x0190
400
0x00
off
100.0
'0000.0011.0010.0
000'
0x0320
800
0x00
off
200.0
'0000.0110.0100.0
000'
0x0640
1600
0x00
off
400.0
'0000.1100.1000.0
000'
0x0C80
3200
0x00
off
600.0
'0001.0010.1100.0
000'
0x12C0
4800
0x00
off
800.0
'0001.1001.0000.0
000'
0x1900
6400
0x00
off
1000.0
'0001.1111.0100.0
000'
0x1F40
8000
0x00
off
1200.0
'0010.0101.1000.0
000'
0x2580
9600
0x00
off
1370.0
'0010.1010.1101.0
000'
0x2AD0
10960
0x00
off
> ca.1370.0
'0010.1010.1101.1
001'
> 0x2AD9 > 10969
0x42
on
Broken wire
'0111.1111.1111.1
010'
0x7FFA
32762
0x42
on
1)
Status information: X: not used, F: short-circuit, broken wire, Ü: overrange
2)
Temperature values below 0 °C are represented in two’s complement binary form.