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WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
4.5.4
Temperature Measurements (RTD & TC) with High
Resolution
4.5.4.1 Standard Format/Fahrenheit
With the setting “High Resolution,” the I/O module converts the measured values
of the temperature sensors (RTDs or TCs) into temperature values and outputs
the conversion results in degrees Fahrenheit to two decimal places.
The temperature values are represented in one word (16 bits) with a resolution of
one digit per 0.01 °F.
The numerical range used corresponds to the defined temperature range of
−58
°F … +302 °F and is output accordingly as a process value in the range
−5800 … +30200.
Exception:
With
Type C
TC sensors, the defined temperature range
corresponds to +32 °F …+302 °F, i.e. +3200 … +30200 as a process value
Table 67: Temperature Measurement Setting with High Resolution Option – Standard Format/
Fahrenheit
Temperature
[°F]
Numeric Value
1)
Status Byte,
Hex.
Error LED
Range
Hex.
Dec.
≤
-76.01
0x8000
-32768
0x50
On
Underflow
-76.00
0xE250
-7600
0x41
On
Underrange
-58.01
0xE957
-5801
-58.00
0xE958
-5800
0x00
Off
Nominal
range
302.00
0x75F8
30200
302.01
0x75F9
30201
0x42
On
Overrange
320.00
0x7D00
32000
≥
320.01
0x7FFF
32767
0x60
On
Overflow
1)
Process values below 0 are represented in binary form as the two’s complement.
Table 68: Type C TC Setting with High Resolution Option – Standard Format/Fahrenheit
Temperature
[°F]
Numeric Value
Status Byte,
Hex.
Error LED
Range
Hex.
Dec.
≤
13.99
0x8000
-32768
0x50
On
Underflow
14.00
0x0578
1400
0x41
On
Underrange
31.99
0x0C7F
3199
32.00
0x0C80
3200
0x00
Off
Nominal
range
302.00
0x75F8
30200
302.01
0x75F9
30201
0x42
On
Overrange
320.00
0x7D00
32000
≥
320.01
0x7FFF
32767
0x60
On
Overflow