Pt100 (Iec 751), High-Resolution, Id 11; Standard Format; Table 45: Id 11, Pt100 Setting (Iec 751), Standard Format - WAGO 750-451 Manual

WAGO-I/O-SYSTEM 750
750-451 8 AI RTD
4.3.13

Pt100 (IEC 751), High-Resolution, ID 11

4.3.13.1

Standard Format

The "Pt100 (IEC 751)" setting is used by the I/O module to convert the resistance
measured values from Pt100 sensors (IEC 751) to temperature values and
outputs the results in degrees Celsius.
The temperature values are displayed with a resolution of 1 digit per 0.01 °C in
one word (16 bits). 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 0x2710 (dec. 10000). The maximum numeric range in the two's
complement representation that can be displayed with one word ranges from -
32768 to +32767. The numeric range that is used depends on the set sensor
type and on the resolution for the process value. With the "Pt100 (IEC 751)"
setting, the possible numeric range corresponds to the temperature range of −50
°C to +150 °C, meaning it covers a range of −5000 to +15000.

Table 45: ID 11, Pt100 Setting (IEC 751), Standard Format

Temperature
°C
---
Short circuit
< −50,0
Underrange
−50,0
−25,0
0,0
25,0
50,0
75,0
100,0
125,0
150,0
> 150,0
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 "Diagnostics" > "Error
Response")
3) When lower/upper limit violation detection is on (see Section "Diagnostics" > "Error Response")
Resistance
Ω
Binary
< 10,00
'1110.1100.0111.1000'
2)
< 80,306
'1110.1100.0111.1000'
3)
80,306 '1110.1100.0111.1000'
90,192 '1111.0110.0011.1100'
100,000 '0000.0000.0000.0000'
109,735 '0000.1001.1100.0100'
119,397 '0001.0011.1000.1000'
128,987 '0001.1101.0100.1100'
138,506 '0010.0111.0001.0000'
147,951 '0011.0000.1101.0100'
157,325 '0011.1010.1001.1000'
> 157,325
'0011.1010.1001.1000'
3)
> 5010,00
'0011.1010.1001.1000'
2)
1)
Numeric value
Hex.
0xEC78
0xEC78
0xEC78
0xF63C
0x0000
0x09C4
0x1388
0x1D4C
0x2710
0x30D4
0x3A98
0x3A98
0x3A98
Process Image 55
Status
Error
byte
LED
hex.
Dec.
−5000 0x50 ON
−5000 0x41 ON
−5000 0x00 OFF
−2500 0x00 OFF
0 0x00 OFF
2500 0x00 OFF
5000 0x00 OFF
7500 0x00 OFF
10000 0x00 OFF
12500 0x00 OFF
15000 0x00 OFF
15000 0x42 ON
15000 0x60 ON
Manual
Version 1.2.0