Festo DLP-VSE Series, Manual

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5. Diagnosis
5-14
Festo P.BE-DLP-VSE-... en 0206a
5.3.1 General DP master
With the function Set_Prm you have the possibility of deter-
mining the watchdog time (WD_Fact_1, Octet 2, WD_Fact_2,
Octet 3). In the event of a fault, e.g. a bus failure, the Local
control unit will switch off all the valves and electric outputs
after the parametrized time.
5.3.2 Siemens SIMATIC S5/S7
With these controllers you can determine the reaction of the
Local control unit to the faults mentioned (details see con-
troller manual).
Almost all configuration programs contain the function “Re-
sponse monitoring”. For the operating modes mentioned, the
time specified corresponds to the drop-off time of the valves
and electric outputs.
Further details on response monitoring can be found in the
appropriate manuals.
You can set two types of error reactions of the control system.
S
when a fault occurs the controller switches to the operat-
ing mode “STOP” (hard error reaction) or
S
when a fault occurs the controller remains in the operat-
ing mode “RUN” (soft error reaction)