Error Treatment - Festo CPV-DI01 Manual

3. Diagnosis PROFIBUS-DP
3.4

Error treatment

Festo P.BE-CP-DI01-EN en 0007a
With the following faults, the reaction of the CP system de-
pends on the configured reaction of the master module:
– telegram failure
– master has stopped
– interruption in bus cable.
If the setting or configuration is successful, all the outputs
(valves and electric outputs) will be switched off or maintain
their status.
Warning
S Make sure that valves and outputs are reset when the
faults mentioned occur.
A dangerous situation can arise if the valves and outputs
are not reset.
Please note
If the outputs are reset after PLC stop, field bus interrup-
tion or fault, please observe the following:
– single-solenoid valves move to the basic position
– double-solenoid valves remain in the current position
– mid-position valves move to the mid-position (depend-
ing on valve type): pressurized, exhausted or blocked).
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