WAGO-I/O-SYSTEM 750
750-461 2AI Pt100/RTD
4.2
I/O Modules with Ni Resistance Sensors
Table 20: I/O Modules with Ni Resistance Sensors
750-461/000-004
750-461/000-005
750-461/000-009
4.2.1
Ni100
The 750-461/000-004 version calculates the resistance values of Ni100 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 -60 °C to +250 °C for type Ni100 sensors.
Table 21: Process Image, Ni100, with Wire Break Diagnostics
Temperature
°C
< −60.0
−60.0
−50.0
0.0
50.0
100.0
150.0
200.0
250.0
> 250.0
Wire break at R
1)
Process values below 0 °C are represented in two's complement binary
The measured value can exceed a decimal range of -600 to +2500 before
limitation takes effect.
Manual
Version 1.4.0
Evaluation Ni100
Measuring range: −60 °C to +250 °C
Evaluation Ni1000 TK6180
Measuring range: −60 °C to +250 °C
Evaluation Ni1000 TK5000
Measuring range: −30 °C to +122 °C
Resistance
Ω
Binary
< 69.16
'1000.0000.0000.0001'
69.16
'1111.1101.1010.1000'
74.26
'1111.1110.0000.1100'
100.00
'0000.0000.0000.0000'
129.10
'0000.0001.1111.0100'
161.77
'0000.0011.1110.1000'
198.62
'0000.0101.1101.1100'
240.64
'0000.0111.1101.0000'
289.13
'0000.1001.1100.0100'
> 289.13
'0010.0001.0011.0100'
'0010.0001.0011.0100
L
1)
Numeric value
Hex.
0x8001
0xFDA8
0xFE0C
0x0000
0x01F4
0x03E8
0x05DC
0x07D0
0x09C4
0x2134
0x2134'
Process Image
29
Status
LED
Byte
Error
Hex.
AI 1, 2
Dec.
−32767
0x41
ON
−600
0x00
OFF
−500
0x00
OFF
0
0x00
OFF
500
0x00
OFF
1000
0x00
OFF
1500
0x00
OFF
2000
0x00
OFF
2500
0x00
OFF
8500
0x42
ON
8500
0x42
ON