Namur Variant 750-484/000-001; Table 19: Process Values For The Hart Module - WAGO I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-484 2AI 4-20mA HART Ex i

Table 19: Process Values for the HART Module

Input Current
4 mA ... 20 mA
<3
<4
4
6
8
10
12
14
16
18
20
>20
>22
*)
Status bits: F = Cable break, O = Overrun
4.2

NAMUR Variant 750-484/000-001

For pure 3.6 mA ... 21 mA analog values the HART module transmits 16-bit
measured values and optionally 8 status bits on each channel.
The digitalized measured value is transmitted to the process image of the
coupler/controller in a data word (16 bits) as an input byte 0 (low) and input byte
1 (high).
This value is mapped with a resolution of 13 bits on Bit B2 ... B14.
Status information, which can be evaluated in the event of a fault, is contained in
the two least significant bits (B0 and B1). If the measurement is above the
measuring range, Bit B0 is set = 1, and if the measurement is below the
measuring range or if a wire breaks, Bit B0 and B1 are set = 1.
The input voltage range for the measured values of 3.6 mA to 21 mA is scaled to
the numerical range from 0xFCFF to 0x7FFD.
Numeric Value
Binary
*)
XFO
Measured Value
'0000.0000.0000.00 11'
'0000.0000.0000.00 00'
'0000.0000.0000.00 00'
'0001.0000.0000.00 00'
'0010.0000.0000.00 00'
'0011.0000.0000.00 00'
'0100.0000.0000.00 00'
'0101.0000.0000.00 00'
'0110.0000.0000.00 00'
'0111.0000.0000.00 00'
'0111.1111.1111.11 00'
'0111.1111.1111.11 00'
'0111.1111.1111.11 01'
Process Image
Status
Hex. Dec.
0x0003 3
0x0000 0
0x0000 0
0x1000 4096
0x2000 8192
0x3000 12288
0x4000 16384
0x5000 20480
0x6000 24576
0x7000 28672
0x7FFC 32764
0x7FFC 32764
0x7FFD 32765
31
LED
Byte Error
Hex. AI 1, 2
0x41 on
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x42 on
Manual
Version 1.4.0