Fail-safe operation of KP8F and KP32F
7.3 Error diagnostics
KP8, KP8F, KP32F
Operating Instructions, 11/2011, A5E03284305-02
97
Determining passivation
If you want to determine if the HMI device is passive or not, address the "PASS_OUT"
variable of the F-I/O. The variable can be assigned the following values:
● 0 = HMI device not passive
● 1 = HMI device passive
Reintegration of KP8F and KP32F
After passivation of the HMI device, the fault must be diagnosed and rectified. Afterwards,
the HMI device can be reintegrated.
7.3 Error diagnostics
Diagnostic functions
Diagnostic functions , in other words displays and messages, are not critical to safety and
therefore are not designed to be safety-related functions. They are therefore not tested
internally.
Diagnostic function the HMI device
The fail-safe HMI device includes a non-configurable diagnostic function. The diagnostics
are always activated and are automatically made available by the HMI device in STEP 7 and
passed on to the controller in the event of a fault.
The diagnostics function passes the following diagnostics information to the controller:
● Communication error
The communication between the HMI device as the IO-device and the controller as the
IO-controller is disrupted.
● Configuration error
Error in the PROFIsafe configuration
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