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Process Image
WAGO-I/O-SYSTEM 750
750-451 8 AI RTD
Manual
Version 1.1.0
4.3.4.2 S5-FB250 Format
With the setting “Pt1000 (IEC 751)” and activated S5-FB250 format, the I/O
module converts the measured resistance values of Pt1000 sensors (IEC 751) into
temperature values and outputs the conversion results.
The temperature values are displayed at a resolution of 1 digit per 0.5 °C.
The status information is depicted in bit 0 to bit 2 and the digitalized measured
value in bit 3 to bit 15.
Table 25: ID 2, Setting Pt1000 (IEC 751), S5-FB250 Format
Temperatur
e
°C
Resistance
Ω
Numeric value
1)
with status information
4)
Status
byte
hex.
Error
LED
Binary
XFÜ
Hex.
Dec.
---
< 10.00
'1111.0011.1000.0 010'
0xF382
−3198
0x50
ON
Short circuit
2)
< −200.0
< 185.20
'1111.0011.1000.0 001'
0xF381
−3199
0x41
ON
Underrange
3)
−200.0
185.20
'1111.0011.1000.0 000'
0xF380
−3200
0x00
OFF
−100.0
602.56
'1111.1001.1100.0 000'
0xF9C0
−1600
0x00
OFF
0.0
1000.00 '0000.0000.0000.0 000'
0x0000
0
0x00
OFF
100.0
1385.06 '0000.0011.1110.1 000'
0x0640
1600
0x00
OFF
200.0
1758.56 '0000.0111.1101.0 000'
0x0C80
3200
0x00
OFF
500.0
2809.78 '0001.1111.0100.0 000'
0x1F40
8000
0x00
OFF
750.0
3606.38 '0010.1110.1110.0 000'
0x2EE0
12000
0x00
OFF
800.0
3757.04 '0011.0010.0000.0 000'
0x3200
12800
0x00
OFF
850.0
3904.81 '0011.0101.0010.0 000'
0x3520
13600
0x00
OFF
> 850.0
> 3904.81
'0011.0101.0010.0 001'
0x3521
13601
0x42
ON
Overrange
3)
---
> 5010.00
'0011.0101.0010.0 010'
0x3522
13602
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”)
4) Status information:
X: Not used,
F: Short circuit, wire break,
Ü: Underrange, overrange