Parameter Data Records; Parameter Assignment And Structure Of The Parameter Data Records - Siemens simatic s7-1500 User Manual

Parameter data records

B.1

Parameter assignment and structure of the parameter data records

The data records of the module have an identical structure, regardless of whether you
configure the module with PROFIBUS DP or PROFINET IO.
Dependencies for configuration with GSD file
When configuring the module with a GSD file, remember that the settings of some
parameters are dependent on each other. The parameters are only checked for plausibility
by the module after the transfer to the module.
The following table lists the parameters that depend on one another.
Table B- 1 Dependencies of parameters for configuration with GSD file
Device-specific parameters (GSD file)
Wire break
Reference channel error
Resistance measurement type (4-wire connec-
tion. 3-wire connection)
Hardware interrupt limits
Fixed reference temperature
Temperature unit Kelvin (K)
Parameter assignment in the user program
The module parameters can be assigned in RUN (for example, measuring ranges of
selected channels can be edited in RUN without having an effect on the other channels).
Parameter assignment in RUN
The WRREC instruction is used to transfer the parameters via data records 0 to 8. The
parameters set in STEP 7 do not change in the CPU, which means the parameters set in
STEP 7 are still valid after a restart.
The parameters are only checked for plausibility by the module after the transfer to the
module.
Output parameter STATUS
The module ignores errors that occurred during the transfer of parameters with the WRREC
instruction and continues operation with the previous parameter assignment. However, a
corresponding error code is written to the STATUS output parameter.
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Dependent parameters
Only for measurement type Resistance, Resistance Thermometer RTD,
Thermocouple TC.
Only for measuring type thermocouple TC.
Only for measuring range 150 Ω, 300 Ω, 600 Ω and 6000 Ω.
Only if hardware interrupts are enabled.
Only if the value Fixed reference temperature is configured at parameter
Reference junction for TC.
Only for measuring type thermistor RTD and for thermocouple TC.
Analog Input Module AI 8xU/R/RTD/TC HF (6ES7531-7PF00-0AB0)
B
Manual, 09/2016, A5E36647959-AB