Pt1000 (Acc. Iec 751); Table 28: Process Image For 750-464, Pt1000 Setting (Acc. Iec 751) - WAGO -I/O-SYSTEM 750 Manual

44 Process Image
4.3.4

Pt1000 (acc. IEC 751)

With the setting "Pt1000 (acc. IEC 751)", the I/O module converts the resistance
measured values of Pt1000 sensors (acc. IEC 751) and outputs them 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 ... +850 °C for Pt1000 sensors (acc. IEC 751).

Table 28: Process image for 750-464, Pt1000 setting (acc. IEC 751)

Temperature
°C
---
Short circuit
< −200.0
Underrange
−200.0
−100.0
0.0
100.0
200.0
500.0
750.0
800.0
850.0
> 850.0
Overrange
---
Wire break
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 "Behavior in the Event of an
Error")
3) When underrange / overrange limit is ON (see section "Behavior in the Event of an Error")
Manual
Version 1.1.0
Resistance
Ω
Binary
< 9.00
'1111.1000.0011.0000'
2)
< 185.20
'1111.1000.0011.0000'
3)
185.20 '1111.1000.0011.0000'
602.56 '1111.1100.0001.1000'
1000.00 '0000.0000.0000.0000'
1385.06 '0000.0011.1110.1000'
1758.56 '0000.0111.1101.0000'
2809.78 '0001.0011.1000.1000'
3606.38 '0001.1101.0100.1100'
3757.04 '0001.1111.0100.0000'
3904.81 '0010.0001.0011.0100'
> 3904.81
'0010.0001.0011.0100'
3)
> 5500.00
'0010.0001.0011.0100'
2)
WAGO-I/O-SYSTEM 750
750-464 2/4 AI RTD configurable
1)
Numeric value
Hex.
0xF830
0xF830
0xF830
0xFC18
0x0000
0x03E8
0x07D0
0x1388
0x1D4C
0x1F40
0x2134
0x2134
0x2134
Status LED
byte error
hex. AI 1, 2
Dec.
−2000 0x51 on
−2000 0x41 on
−2000 0x00 off
−1000 0x00 off
0 0x00 off
1000 0x00 off
2000 0x00 off
5000 0x00 off
7500 0x00 off
8000 0x00 off
8500 0x00 off
8500 0x42 on
8500 0x62 on