Siemens SIMATIC ET 200AL, System Manual

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Diagnostics and maintenance
4.8 Diagnostics in the user program
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
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Library for PROFINET data records
The "LPNDR" block library contains various function blocks. You can use these blocks to read
out various device and status information from a PROFINET device and write parameters.
You can execute the following functions using the library blocks:
•
Read device information:
– Information about the interface, e.g. IP and MAC address
– Information about the device interface, e.g. status, medium, name
– Information about the link status of the interfaces, e.g. link down, link up
– Information about the role of the device for MRP, e.g. client, manager
– Information about the port statistics, e.g. number of received bytes
• Read the MRP status
• Modification of the parameters of analog input module of the ET 200SP in runtime, e.g. in
order to disable/enable the channel diagnostics.
The finished functions are freely adaptable and can therefore be used universally.
The "LPNDR" block library with an example project can be found on the Internet
( https://support.industry.siemens.com/cs/ww/en/view/109753067 ).
4.8.2 Evaluate diagnostics in the user program
Diagnostics in the user program
For PROFINET IO, a cross-vendor structure of data records with diagnostics information
applies. Diagnostics information is created only for channels on which a fault has occurred.
With PROFINET, there are two basic ways to obtain diagnostics information.