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 fileOnly for measuring type current with measuring range 4
mA to 20 mA.
Wire break Only for measuring type resistance with measuring range
1V to 5 V and current with measuring range 4 mA to 20
mA.
Hardware interrupt limits Only if hardware interrupts are enabled.gnment in the user program
You have the option to assign module parameters in RUN (e.g., the voltage or current values
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.
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.If the module is operated behind a PROFIBUS DP interface module, the parameter data
records 0 and 1 are not read back. You obtain the diagnostics data records 0 and 1 with the
read back parameter data records 0 and 1. You can find additional information in the
Interrupts section of the manual for the PROFIBUS DP interface module on the data record and channel
For the configuration as a 1 x 8-channel module, the parameters are located in data records
0 to 7 and are assigned as follows:
● Data record 0 for channel 0
● Data record 1 for channel 1
● …
● Data record 6 for channel 6
● Data record 7 for channel

For configuration 8 x 1-channel, the module has 8 submodules with one channel each. The
parameters for the channel are available in data record 0 and are assigned as follows:
● Data record 0 for channel 0 (submodule 1)
● Data record 0 for channel 1 (submodule 2)
● …
● Data record 0 for channel 6 (submodule 7)
● Data record 0 for channel 7 (submodule 8)
Address the respective submodule for data record transfer.
Dependency of the parameter data records
The structure of the parameter data record differs depending on the configuration:
● 28 bytes data length for configuration without scaling of the measured values, see section
Structure of the parameter data records without scaling of measured values (Page 52).
● 40 bytes data length for configuration with scaling of the measured values, see section
Structure of the parameter data records with scaling of measured values (Page 55).
Parameter data records
B.2 Structure of the parameter data records without scaling of measured values
Analog Input Module AI 8xU/I HF (6E531-7NF00-0AB0)
52 Manual, 09/2016, A5E36649087-AB
B.2 Structure of the parameter data records without scaling of measured
values
Structure of a data record without scaling of the measured values
The figure below shows the structure of data record 0 for channel 0 as an example. The
structure is identical for channels 1 to 7. The values in byte 0 and byte 1 are fixed and may
not be changed.
Enable a parameter by setting the corresponding bit to "1".Structure of data record 0: Byte 12 to 27 without scaling of measured values