32 Process Image
WAGO-I/O-SYSTEM 750
750-461 2AI Pt100/RTD
Manual
Version 1.4.1
4.2.3
Ni1000 TK5000
The 750-461/000-009 version calculates the resistance values of Ni1000-TK5000
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
−
30 °C to +122 °C for type Ni1000 TK5000 sensors.
Table 23: Process Image, Ni1000 TK5000, with Wire Break Diagnostics
Temperature
°C
Resistance
Ω
Numeric value
1)
Status
Byte
Hex.
LED
Error
AI 1, 2
Binary
Hex.
Dec.
< 60
'0010.0001.0011.0100'
0x2134
8500
0x42
ON
<
−30.0
< 871
'1000.0000.0000.0001'
0x8001
−32767
0x41
ON
−30.0
871
'1111.1110.1101.0100' 0xFED4
−300
0x00
OFF
−10.0
956
'1111.1111.1001.1100'
0xFF9C
−100
0x00
OFF
10.0
1044
'0000.0000.0110.0100'
0x0064
100
0x00
OFF
30.0
1137
'0000.0001.0010.1100'
0x012C
300
0x00
OFF
50.0
1235
'0000.0001.1111.0100'
0x01F4
500
0x00
OFF
70.0
1337
'0000.0010.1011.1100'
0x02BC
700
0x00
OFF
90.0
1444
'0000.0011.1000.0100'
0x0384
900
0x00
OFF
122.0
2891
'0000.0100.1100.0100'
0x04C4
1220
0x00
OFF
> 122.0
> 1627
'0010.0001.0011.0100'
0x2134
8500
0x42
ON
Wire break at RL
0010.0001.0011.0100'
0x2134
8500
0x42
ON
1)
Process values below 0 °C are represented in two's complement binary.
The measured value can exceed a decimal range of
−
300 to +1220 before
limitation takes effect.
