Data Blocks/Error Lists
C-25
FM 351 Positioning Module
C79000-G7076-C351-02
No. Diagnostic
Interrupt
Meaning
146
Incremental encoder missing pulses Yes
Cause
• Encoder monitoring has detected missing pulses.
• Number of increments per encoder revolution is
incorrectly entered.
• Encoder defective: Does not supply the specified
number of pulses.
• Incorrect or missing zero marker.
• Interference affecting the encoder cable.
Effect
• Positioning is aborted.
• Switching off the outputs
• Start enable is deleted.
Remedy
• Enter the number of increments/encoder
revolution correctly (parameter dialog).
• Check the encoder and encoder cable.
• Keep to shielding and grounding regulations.
• Monitoring can be temporarily suppressed at the
operator’s risk by setting parameters in the
parameter dialog.
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