66
Commissioning
WAGO-I/O-SYSTEM 750
750-451 8 AI RTD
Manual
Version 1.1.0
Table 51: Register 38
Register
Function
Memory
Access
Default setting
38
User calibration
Gain
EEPROM
R/W
0x8000
Bit 0 … 15: User calibration Gain
0 … 65535
Value range (raw), decimal, 16-bit unsigned integer
0000 … FFFF
Value range (raw), hexadecimal, 16-bit unsigned integer
0 …
Value range (scaled), decimal, 16-bit unsigned integer
Resolution: 1/32768
Unit
–
Equation: Raw value(corr) =
((raw value(ADC) × Reg38) / 32768) × (Reg37 × 8)
The user calibration is enabled if bit 6 in register 35 is set.
Table 52: Register 39
Register
Function
Memory
Access
Default setting
39
User scaling
Offset
EEPROM
R/W
0x0000
Bit 0 … 15: User scaling Offset
–32768 … 32767
Value range (raw), decimal, 16-bit integer
8000 … 7FFF
Value range (raw), hexadecimal, 16-bit integer
–262144 … 262136
Value range (scaled), decimal, 16-bit integer
FFFC0000 … 03FFF8
Value range (scaled), hexadecimal, 16-bit integer
Resolution: 1/32768
Unit
–
Equation*: y2 = ((y1 × Reg40) / 256**) + Reg39
User scaling is enabled if bit 7 is set in register 35.
*) y1= unscaled process value
y2= scaled process value
**) Gain Divisor = set to 256 by default, cannot be changed
Table 53: Register 40
Register
Function
Memory
Access
Default setting
40
User scaling
Gain
EEPROM
R/W
0x0100
Bit 0 … 15: User scaling Gain
0 … 65535
Value range (raw), decimal, 16-bit unsigned integer
0000 … FFFF
Value range (raw), hexadecimal, 16-bit unsigned integer
0 … 65535
Value range (scaled), decimal, 16-bit unsigned integer
0000 … FFFF
Value range (scaled), hexadecimal, 16-bit unsigned integer
Resolution: 1
Unit
–
Equation*: y2 = ((y1 × Reg40) / 256**) + Reg39
User scaling is enabled if bit 7 is set in register 35.
*) y1= unscaled process value
y2= scaled process value
**) Gain Divisor = set to 256 by default, cannot be changed