Declaration Of Parameters - Siemens simatic s7-1500 User Manual

4.3

Declaration of parameters

Missing supply voltage L+
Enabling of the diagnostics, with missing or too little supply voltage L+.
Overflow
Enabling of the diagnostics if the measured value violates the high limit.
Underflow
Enabling of the diagnostics when the measured value falls below the underrange or for
voltage measurement ranges of ± 25 mV to ± 1.0 V if the inputs are not connected.
Reference channel error
● Enable diagnostics for an error at the temperature compensation channel, e.g. wire
break.
● Dynamic reference temperature compensation type is configured and no reference
temperature has been transferred to the module yet.
Wire break
Enable for diagnostics to check the cable resistances.
Temperature coefficient
The temperature coefficient depends on the chemical composition of the material. In Europe,
only one value is used per sensor type (default value).
The temperature coefficient (α value) indicates by how much the resistance of a specific
material changes relatively if the temperature increases by 1 °C.
The further values facilitate a sensor-specific setting of the temperature coefficient and
enhance accuracy.
Interference frequency suppression
Suppresses the interference affecting analog input modules that is caused by the frequency
of the AC voltage network used.
The frequency of the AC voltage network can negatively affect the measured value, in
particular when measuring in low voltage ranges and with thermocouples. With this
parameter, the user specifies the line frequency that is predominant in the plant.
Analog Input Module AI 8xU/R/RTD/TC HF (6ES7531-7PF00-0AB0)
Manual, 09/2016, A5E36647959-AB
Parameters/address space
4.3 Declaration of parameters
31