Fail-safe operation of KP8F and KP32F
7.3 Error diagnostics
KP8, KP8F, KP32F
98 Operating Instructions, 11/2011, A5E03284305-02
Reading diagnostic information
If you wish to locate the cause of an error, open the module diagnostics in STEP 7. You can
find detailed information in the online help for STEP 7.
The following table shows the diagnostic functions of the HMI device. The diagnostic
functions are assigned either to one channel or to the entire module.
Diagnostics function Error code Scope of diagnostics functions
Short-circuit 0x01 Channel
Configuration error 0x10 Module
Communication error 0x13 Module
Discrepancy error 0x19 Channel
Non-permissible sensor evaluation 0x1C Module
PROFIsafe address deviation 0x1D Module
Serious error 0x1E Module
Version conflict 0x1F Module
You have the option of reading the diagnostics functions in the standard program by calling
SFB 52 or SFB 54. For detailed information, refer to the "System and Standard Functions"
reference manual.
Diagnostics of PROFIsafe errors
When diagnosing PROFIsafe errors, address the "DIAG" variable of the F-I/O DB. Detailed
information about the F-I/O-DB can be found in the Programming and operation manual "S7
Distributed Safety - Configuring and Programming"
(http://support.automation.siemens.
com
/WW/view/en/22099875)".
HMI device with a serious error
If a serious error in the HMI device leads to its failure, the HMI device reacts as follows:
● The connection to PROFINET will be interrupted and the fail-safe channels will be
rendered passive.
● No diagnosis will be transmitted from the HMI device.
In STEP 7 in module diagnostics, the standard diagnosis "Module interrupted" or "Module
missing" will be reported.
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