Diagnostic frame
In the above diagnostic events, relevant IDs are set in the DP diagnostic frame in the identifier-
related and module-specific ranges. In addition, swapping and diagnostic interrupts are
triggered. Details can be found in the following sections.
Further preparation of the diagnostics data is handled by means of the
PCS 7 "Advanced
Process Library" (APL) in the CPU. One module block per channel checks the quality code of
the channel and issues an interrupt if necessary.
You can read additional diagnostics data from the FF device using the diagnostic page of the
faceplate on the
PCS 7 Maintenance Station.
Note
The diagnostics data of the FF devices can only be read using the Maintenance Station or
SIMATIC PDM.
If a new configuration is not compatible with the FF device version, the FF-device recognizes
neither the Compact FF Link nor the CPU. An active check is possible with
SIMATIC PDM.
Additional information
For additional information, please refer to the
STEP 7 online help topic "How to diagnose
hardware"
For more information on reading out diagnostics information, refer to the Programming with
http://support.automation.siemens.com/WW/view/en/18652056
) manual.
See also
Structure of slave diagnostics (Page 64)
Reading out diagnostics from FF devices (Page 75)
Interrupts (Page 73)
11.2.1
Structure of slave diagnostics
Influencing factors
The structure of the slave diagnostics depends on whether the Compact FF Link is working in
S7 standard mode or redundancy mode on an S7-400H.
Alarm, error, and system messages
11.2 Diagnostics of the Compact FF Link
Compact FF Link
64
Operating Instructions, 03/2015, A5E35651552-AA
