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Operation of the module behind a PROFIBUS DP interface module
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 Internet
(http://support.automation.siemens.com/WW/view/en/78324181).
Assignment of 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 7
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).
Analog Input Module AI 8xU/I HF (6ES7531-7NF00-0AB0)
Manual, 09/2016, A5E36649087-AB
Parameter data records
B.1 Parameter assignment
51
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