Siemens Simatic S7-1500 Manuel - Page 45

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Parameter data records

B.1

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.

DI mode: no dependencies. You can assign the individual parameters in any combination.

Counting mode: 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)

Comparison value

Start value

Parameter assignment in the user program

You have the option to reconfigure the module in RUN (e.g. the input delay values of

selected channels can be edited 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 31. 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.

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.

The description of the WRREC instruction and the error codes is available in the STEP 7

online help.

Dependent parameters

0 ... high counting limit

DI 32x24VDC HF digital input module (6ES7521-1BL00-0AB0)

Manual, 09/2016, A5E03485935-AF