Short-circuit/overload at an output module
If there is a short circuit or overload:
• the digital output will be switched off
• the red LED will light up
• the periphery fault (PF) of the diagnostic
status register will be set at logic 1
• the error code "short circuit/overload" will be
entered in the four status bits
In order to reactivate the output, proceed as
follows:
The output can then be reset at 1. If the short
circuit still exists, the output will be switched off
again.
Step Explanation
Eliminate short circuit or overload
Set output at 0 (RESET) • e.g. user program controlled.
The error bit (PF) in the
diagnostic register is reset at logic 0.
Fig. 5/12: Eliminating short circuit or overload
VIFB6 - 03/05 5. Diagnosis/Error Treatment
5-16
9809c
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