WAGO-I/O-SYSTEM 750
Process Image
45
750-451 8 AI RTD
Manual
Version 1.1.0
4.3.10 Ni1000 (TK6180, DIN 43760), high-resolution, ID 8
4.3.10.1 Default Format
With the setting “Ni1000 (TK6180, DIN 43760)”, the I/O module converts the
measured resistance values of Ni1000 sensors (TK6180, DIN 43760) into
temperature values and outputs the conversion results in degrees Celsius.
The temperature values are displayed at a resolution of 1 digit per 0.01 °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 0x2710 (dec. 1000).
The maximum number range viewable in one word in two's complement
representation ranges from −32768 to +32767. The number range used depends on
the sensor type set and the resolution of the process value. For the setting “Ni1000
(TK6180, DIN 43760)”, the possible numerical range corresponds to the defined
temperature range of −50 °C to +150 °C and ranges from −5000 to +15000
accordingly.
Table 36: ID 8, Setting Ni1000 (TK6180, DIN 43760), Standard Format
Temperature
°C
Resistance
Ω
Numeric value
1)
Status
byte
hex.
Error
LED
Binary
Hex.
Dec.
---
< 10.00
'1110.1100.0111.1000'
0xEC78
−5000
0x50
ON
Short circuit
2)
< −50.0
< 742.56
'1110.1100.0111.1000'
0xEC78
−5000
0x41
ON
Underrange
3)
−50.0
742.56
'1110.1100.0111.1000'
0xEC78
−5000
0x00
OFF
−25.0
867.04
'1111.0110.0011.1100'
0xF63C
−2500
0x00
OFF
0.0
1000.00
'0000.0000.0000.0000'
0x0000
0
0x00
OFF
50.0
1291.10
'0001.0011.1000.1000'
0x1388
5000
0x00
OFF
100.0
1617.80
'0010.0111.0001.0000'
0x2710
10000
0x00
OFF
125.0
1796.30
'0011.0000.1101.0100'
0x30D4
12500
0x00
OFF
150.0
1986.40
'0011.1010.1001.1000'
0x3A98
15000
0x00
OFF
> 150.0
> 1986.40
'0011.1010.1001.1000'
0x3A98
15000
0x42
ON
Overrange
3)
---
> 5010.00
'0011.1010.1001.1000'
0x3A98
15000
0x60
ON
Wire break
2)
1) Temperature values below 0 °C are represented in two's complement binary.
2) When short circuit and wire break monitoring is ON (see section “Diagnostics” > „Behavior in
the Event of an Error“)
3) When underrange / overrange limit is ON (see section “Diagnostics” > „Behavior in the Event
of an Error“)