134 Commissioning
WAGO-I/O-SYSTEM 750
750-489 4AI RTD/TC/Strain Gauge Ex i
Manual
Version 1.1.0, valid from FW Version 02
Table 143: “Scaling” Menu Item, Channel 1 … Channel 4
Parameter
Setting Option / Description
Manufacturer
scaling
The gain and offset values of the manufacturer scaling are
displayed and cannot be changed.
User scaling
When user scaling is switched on, values for offset and gain
can be entered.
The register values can be represented and edited as either
decimals or hexadecimals. If user scaling not enabled, the
offset and gain values cannot be changed.
User scaling is enabled
User scaling is disabled
Offset
[Input field]
The offset value causes a zero offset of the
process value (shift along the Y axis).
The value entered must fall within the range
−32768 ... 32767.
Gain
[Input field]
The gain value is applied to the process
value as a gain factor.
The value entered must fall within the range
−2.0000 ... 1.9999.
A resolution of 1/16384 has already been
taken into account for the decimal input.
Process value
[Output field]
The process value can be constant or
deliberately kept changeable; it can be
represented as a fixed decimal value with
unit or as a hexadecimal, according to the
measurement range.
Show values in
hexadecimal
The hexadecimal representation can be switched on or off.
Hexadecimal representation is enabled.
Hexadecimal representation is disabled.
[Area for displaying
errors]
Underflow
Underflow in the sensor lines
Overflow
Overflow in the sensor lines
Measuring
range
underflow
The field-side input voltage or field-side
input resistance is below the measurement
range lower limit.
Measuring
range overflow
The field-side input voltage or field-side
input resistance is above the measurement
range upper limit.
Internal Error Internal error present (fieldbus power
supply undervoltage or ADC error)
Additional information on the user scaling
Detailed information about user scaling can be found in Section “Scaling
Measuring Values!”
