WAGO-I/O-SYSTEM 750
Process Image 35
750-496 8AI 0/4-20mA S.E.
Manual
Version
1.2.2
4.3.2.3 Sensor Type 3.6 … 21 mA (NAMUR NE43)
For the current measurement with sensor type 3.6 … 21 mA, the input range of
+3.6 … +21 mA is mapped to a value rage of −768 … +32767. The current
underranges and overranges refer to manufacturer range violations.
Table 21: Process Image, Sensor Type 3.6 … 21 mA (NAMUR NE43), Two's Complement
Representation
Input current
mA
Numeric value
Status
Byte
Hex.
Error LED
Binary
XFÜ
1)
Hex.
Dec.
< 1.0
'1111.1101.0000.0 011'
0xFD03
−765
0x60
ON
Wire break
3)
< 3.6
'1111.1101.0000.0 011'
0xFD03
−765
0x41
ON
Underrange
2)
3.6
'1111.1101.0000.0 011'
0xFD03
−765
0x41
ON
3.8
'1111.1110.0111.1 000'
0xFE78
−392
0x00
OFF
4.0
'0000.0000.0000.0 000'
0x0000
0
0x00
OFF
5.6
'0000.1100.0000.1 000'
0x0C08
3080
0x00
OFF
7.2
'0001.1000.0001.0 000'
0x1810
6160
0x00
OFF
8.8
'0010.0100.0010.0 000'
0x2420
9248
0x00
OFF
10.4
'0011.0000.0010.1 000'
0x3028
12328
0x00
OFF
12.0
'0011.1100.0011.1 000'
0x3C38
15416
0x00
OFF
13.6
'0100.1000.0100.0 000'
0x4840
18496
0x00
OFF
15.2
'0101.0100.0101.0 000'
0x5450
21584
0x00
OFF
16.8
'0110.0000.0101.1 000'
0x6058
24664
0x00
OFF
18.4
'0111.0000.0110.1 000'
0x6C68
27752
0x00
OFF
20.0
'0111.1000.1110.0 000'
0x7870
30832
0x00
OFF
20.5
'0111.1100.0011.1 000'
0x7C38
31800
0x00
OFF
21.0
'0111.1111.1111.1 011'
0x7FFB
32763
0x42
ON
Overrange
2)
'0111.1111.1111.1 011'
0x7FFB
32763
0x42
ON
> 21.0
Short circuit
3)
'0111.1111.1111.1 011'
0x7FFB
32763
0x50
ON
> 21.0
1)
Status bits: X: not used, F= error, Ü= overflow
2)
When underrange / overrange limit is ON
3)
When wire break / short circuit diagnostics is ON