Diagnostics and maintenance
4.8 Diagnostics in the user program
PROFINET with STEP 7
100
Function Manual, 05/2021, A5E03444486-AL
1. Evaluating the diagnostics status
Read out the diagnostics of your PROFINET IO system using the instructions "DeviceStates"
and "ModuleStates" to localize faulty stations / modules or station / modules with
maintenance demanded or maintenance required within a PROFINET IO system.
The instruction RDREC (read data record) is then used to read various diagnostics data records
directly from the module concerned and thus obtain detailed information about the error.
Num-
ber
Description
①
All individual errors are collected in a single data record on the interface module.
②
In your user program, the instruction "RDREC" reads the entire station status asynchronously
directly from the IO device.
Figure 4-15 Example: Evaluating diagnostics data records with the instruction "RDREC"
Summary of Contents for SIMATIC ET 200AL
Page 2: ......
Page 143: ......
Page 218: ......
Page 250: ......
Page 296: ......
Page 337: ......
Page 365: ......
Page 392: ......
Page 419: ......
Page 451: ......
Page 483: ......
Page 597: ......
Page 648: ......
Page 702: ......
Page 739: ......
Page 781: ......
Page 804: ......
Page 828: ......
Page 853: ......
Page 880: ......
Page 906: ......
Page 996: ...Diagnostics ...
Page 1121: ......
Page 1565: ......