3. Diagnosis
3-22
Festo P.BE-CP-FB13-E-EN en 0112e
3.6 Online diagnosis with STEP7
Direct diagnostic events in conjunction with the Festo valve
terminal can be:
– Decentral periphery: station failure
- Communication between slave and master interrupted
– Faulty module (see device-specific diagnosis)
– Transition from operating status START to RUN (nominal/
actual difference)
- Configuration data of the valve terminal are not the
same as the periphery
- Valve terminal has incorrect DIL/rotary switch setting
3.6.1 Diagnostic b uffer STEP7 V 5.1
The diagnostic buffer of STEP7 offers the possibility of dis-
playing diagnostic events of the S7 system in the order in
which they occur.
Prerequirements:
– HW Config has been accessed
Proceed as follows (Fig. 3/12):
1. Switch from offline to online 1
2. Use the right-hand mouse key to mark the CPU in the
rack 2. A menu will appear .
3. Click on “Module Information”.
The window “Module Information” 3 will appear.
4. Select the rider “Diagnostic Buffer” 4.
5. Mark the event 5 and read the details on the event.
These will give you more detailed information on how to
proceed further and depend on the S7 controller used.
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