30 Process Image
WAGO I/O System 750
750-482/000-001 2AI 4-20mA HART NAMUR NE43
Manual
Version 1.0.2
Table 17: Process Values for the HART Module, NAMUR NE43 Format
Input Current
3.6 mA … 21 mA
Numeric Value
Status
Byte
Hex.
LED Error
AI 1, AI 2
Binary
Measured Value
FO
1)
Hex.
Dec.
< 1.0
'1111.1100.1111.11 11'
0xFCFF
−7
69
0x60
On
Wire Break
< 3.6
'1111.1100.1111.1 11'
0xFCFF
−7
69
0x41
On
Underrange
3.6
'1111.1100.1111.1 11'
0xFCFF
−7
69
0x41
On
3.8
'1111.1110.0111.1 00'
0xFE7C
−3
88
0x00
Off
4.0
'0000.0000.0000.00 00'
0x0000
0
0x00
Off
5.6
'0000.1100.0000.11 00'
0x0C0C
3084
0x00
Off
7.2
'0001.1000.0001.10 00'
0x1818
6168
0x00
Off
8.8
'0010.0100.0010.01 00'
0x2424
9252
0x00
Off
10.4
'0011.0000.0011.00 00'
0x3030
12336
0x00
Off
12.0
'0011.1100.0011.11 00'
0x3C3C
15420
0x00
Off
13.6
'0100.1000.0100.10 00'
0x4848
18504
0x00
Off
15.2
'0101.0100.0101.01 00'
0x5454
21588
0x00
Off
16.8
'0110.0000.0110.00 00'
0x6060
24672
0x00
Off
18.4
'0110.1100.0110.11 00'
0x6C6C
27756
0x00
Off
20.0
'0111.1000.0111.11 00'
0x787C
30844
0x00
Off
20.5
'0111.1100.0011.11 00'
0x7C3C
31804
0x00
Off
21.0
'0111.1111.1111.11 01'
0x7FFD
32765
0x42
On
Overrange
'0111.1111.1111.11 01'
0x7FFD
32765
0x42
On
> 21.0
Short Circuit
'0111.1111.1111.11 01'
0x7FFD
32765
0x50
On
> 23.0
1)
Status bits: F = Underrange, O = Overrange
4.1
6 Byte Mailbox
In the "6-byte mailbox" operating mode the HART module provides the fieldbus
coupler/controller with a 12-byte input and output process image via one logical
channel.
1 control byte (C0) and 1 status byte (S0) are used to monitor the data flow.
The data is mapped in the cyclic process image of the connected
coupler/controller. However, the HART commands can then be implemented by
the "WagoLibHart_0x.lib" PLC library. The data is tunneled to the application via
a mailbox and decoded by means of the library so that evaluation and processing
take place directly at the application level.
The IEC application can be implemented in the connected programmable
fieldbus controller (PFC) of the fieldbus node with the WAGO-I/O-PRO
programming tool or, if a fieldbus coupler is connected, in the superimposed
controller.