Siemens simatic ET 200MP - Assignment of Data Record and Channel

Analog Input Module AI 8xU/I/R/RTD BA (6ES7531-7QF00-0AB0)
Manual, 03/2019, A5E44792324-AA
45
Parameter data records
B
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)
Dependent parameters
Wire break
Only for
measurement type
resistance 3-wire connection, thermal resis-
tor RTD, voltage with
measuring range
1 to 5 V and current with
meas-
uring range
4 to 20 mA.
Common mode error
Only with measurement type voltage and current
Measurement type
resistance (3-wire-
connection)
Only with
measuring range
600 Ω and 6000 Ω.
Hardware interrupt limits
Only if hardware interrupts are enabled.
Temperature unit Kelvin (K)
Only with measurement type thermal resistor (RTD) standard.
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 to the module using data records
0 to 7. 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.