Process Data; Overview Of Sensor Types; Standard Format; Sensor Type 0-20 Ma - WAGO 750-486 Manual

36 Process Image
4.3

Process Data

4.3.1

Overview of Sensor Types

The following table serves as an overview of all supported sensor types. The
following sections contain detailed information about the individual sensor types.
The information provided in the respective tables on the resolution of the
measured values and the raw value ranges yielded from this are based on
manufacturing scaling.

Table 20: Overview of Sensor Types

4.3.2

Standard Format

4.3.2.1

Sensor Type 0-20 mA

For the current measurement with sensor type 0-20 mA, the input range of
0 mA ... +20 mA is mapped to a process value rage of 0 ... +32763. The current
underranges and overranges refer to manufacturer range violations.
Table 21: Process Image, Sensor Type 0-20 mA, Two's Complement Representation
Input current
mA
< 0
Underrange
0.0
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
Overrange
> 20.0
Short circuit
> 21.0
1)
Status bits: X: not used, F= error, Ü= overflow
2)
When underrange / overrange limit is ON
3)
When short circuit diagnostics is ON
Manual
Version 1.1.2
ID
0
1
2
Numeric value
Binary
'0000.0000.0000.0 011'
2)
'0000.0000.0000.0 000'
'0000.1111.1111.1 000'
'0001.1111.1111.1 000'
'0010.1111.1111.1 000'
'0011.1111.1111.1 000'
'0100.1111.1111.1 000'
'0101.1111.1111.1 000'
'0110.1111.1111.1 000'
'0111.1111.1111.1 000'
2)
'0111.1111.1111.1 011'
3)
'0111.1111.1111.1 011'
750-486 4AI 0/4-20 mA, Ex i
Sensor type
0-20 mA
4-20 mA
3.6-21 mA
1)
XFÜ Hex. Dec.
0x0003 3
0x0000 0
0x0FF8 4088
0x1FF8 8184
0x2FF8 12280
0x3FF8 16376
0x4FF8 20472
0x5FF8 24568
0x6FF8 28664
0x7FF8 32760
0x7FFB 32763
0x7FFB 32763
WAGO-I/O-SYSTEM 750
Measurement range
0 ... +20 mA
+4 ... +20 mA
+3.8 ... +20.5 mA
Status
Byte Error LED
Hex.
0x41 ON
0x00 OFF
0x00 OFF
0x00 OFF
0x00 OFF
0x00 OFF
0x00 OFF
0x00 OFF
0x00 OFF
0x00 OFF
0x42 ON
0x50 ON