Pt1000 (Acc. Iec 751); Table 39: Process Image For 750-464, Pt1000 Setting (Acc. Iec 751) - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-464 2/4 AI RTD configurable
4.4.5

Pt1000 (acc. IEC 751)

With the setting "Pt1000 (acc. IEC 751)" and activated Siemens format, 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 0.5 °C.
The status information is depicted in bit 0 ... bit 2 and the digitalized measured
value in bit 3 ... bit 15.

Table 39: 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")
4) Status information: X: Not used, F: Short circuit, wire break, Ü: Overrange
Numeric value
Resistance
Ω
Binary
< 9.00
'1111.0011.1000.0 011'
2)
< 185.20
'1111.0011.1000.0 001'
3)
185.20 '1111.0011.1000.0 000'
602.56 '1111.1001.1100.0 000'
1000.00 '0000.0000.0000.0 000'
1385.06 '0000.0011.1110.1 000'
1758.56 '0000.0111.1101.0 000'
2809.78 '0001.1111.0100.0 000'
3606.38 '0010.1110.1110.0 000'
3757.04 '0011.0010.0000.0 000'
3904.81 '0011.0101.0010.0 000'
> 3904.81
'0011.0101.0010.0 001'
3)
> 5500.00
'0011.0101.0010.0 011'
2)
Process Image
1)
with status information
XFÜ Hex. Dec.
0xF383 −3197
0xF381 −3199
0xF380 −3200
0xF9C0 −1600
0x0000
0x0640 1600
0x0C80 3200
0x1F40 8000
0x2EE0 12000
0x3200 12800
0x3520 13600
0x3521 13601
0x3523 13603
55
Status LED
4)
byte error
hex. AI 1, 2
0x51 on
0x41 on
0x00 off
0x00 off
0 0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x00 off
0x42 on
0x62 on
Manual
Version 1.1.0