28 Process Image
WAGO-I/O-SYSTEM 750
750-461 2AI Pt100/RTD
Manual
Version 1.4.1
Table 17: Process Image, Pt100, with Wire Break Diagnostics
Temperature
°C
Resistance
Ω
Numeric value
1)
Status
Byte
Hex.
LED
Error
AI 1, 2
Binary
Hex.
Dec.
<
−200.0
10.00
'1000.0000.0000.0001'
0x8001
−32767
0x41
ON
−200.0
18.49
'1111.1000.0011.0000'
0xF830
−2000
0x00
OFF
−100.0
60.25
'1111.1100.0001.1000'
0xFC18
−1000
0x00
OFF
0.0
100.00
'0000.0000.0000.0000'
0x0000
0
0x00
OFF
100.0
138.50
'0000.0011.1110.1000'
0x03E8
1000
0x00
OFF
200.0
175.84
'0000.0111.1101.0000'
0x07D0
2000
0x00
OFF
500.0
280.90
'0001.0011.1000.1000'
0x1388
5000
0x00
OFF
750.0
360.47
'0001.1101.0100.1100'
0x1D4C
7500
0x00
OFF
800.0
375.51
'0001.1111.0100.0000'
0x1F40
8000
0x00
OFF
850.0
390.26
'0010.0001.0011.0100'
0x2134
8500
0x00
OFF
> 850.0
> 390.26
'0010.0001.0011.0100'
0x2134
8500
0x42
ON
Wire break at R
L
'0010.0001.0011.0100'
0x2134
8500
0x42
ON
The measured value can exceed a decimal range of
−
2000 to +8500 before
limitation takes effect.
4.1.2
Pt1000
The 750-461/000-003 version calculates the resistance values of Pt1000 sensors
and outputs the data as temperature values. The temperature values are
displayed at a resolution of 1 digit per 0.1 °C in one word (16-bit). Temperature
values below 0 °C are represented in two's complement binary. As a result, 0 °C
corresponds to the numeric value 0x0000 and 100 °C to the numeric value
0x03E8 (dec. 1000). The possible numeric range corresponds to the defined
temperature range of
−
200 °C to +850 °C for Pt1000 sensors.
Table 18: Process Image, Pt1000, with Wire Break Diagnostics
Temperature
°C
Resistance
Ω
Numeric value
1)
Status
Byte
Hex.
LED
Error
AI 1, 2
Binary
Hex.
Dec.
<
−200.0
100.00
'1000.0000.0000.0001'
0x8001
−32767
0x41
ON
−200.0
184.93
'1111.1000.0011.0000'
0xF830
−2000
0x00
OFF
−100.0
602.54
'1111.1100.0001.1000'
0xFC18
−1000
0x00
OFF
0.0
1000.00
'0000.0000.0000.0000'
0x0000
0
0x00
OFF
100.0
1385.00
'0000.0011.1110.1000'
0x03E8
1000
0x00
OFF
200.0
1758.40
'0000.0111.1101.0000'
0x07D0
2000
0x00
OFF
500.0
2808.96
'0001.0011.1000.1000'
0x1388
5000
0x00
OFF
750.0
3604.65
'0001.1101.0100.1100'
0x1D4C
7500
0x00
OFF
800.0
3755.09
'0001.1111.0100.0000'
0x1F40
8000
0x00
OFF
850.0
3902.62
'0010.0001.0011.0100'
0x2134
8500
0x00
OFF
> 850.0
> 3902.62
'0010.0001.0011.0100'
0x2134
8500
0x42
ON
Wire break at R
L
'0010.0001.0011.0100'
0x2134
8500
0x42
ON
1) Temperature values below 0 °C are represented in two's complement binary.
The measured value can exceed a decimal range of -2000 to +8500 before
limitation takes effect.