Technical data

4.1.1.2 Fault LED
The fault LED is lit permanently or flashes when the firmware of the CP
detects an error (refer to Table 4.2).
Note: when the CP fault LED flashes/is lit, the RUN and STOP LEDs are
irrelevant!
LED Meaning
Fault LED
flashes
- No data transmission possible (data exchange with the
CPU via the backplane bus blocked).
- Parameters can be assigned on the AS 511 interface.
- Data exchange using PG bus functions not possible.
- User module detected as invalid during start-up.
- Management services remain possible.
Possible causes:
- memory submodule fault/error
- firmware and configuration not compatible
The COM test functions provide further diagnostic tools (refer to
Section 12.2).
flashes 2x Too many links programmed.
flashes 3x Memory problem (not enough resources) ot incomplete
database (OB1 missing)
flashes 4x SAP configuration incorrect (e.g. configured twice).
flashes 5x Incorrect bus parameters.
flashes 6x Incorrect application associations (layer 7).
flashes 7x DP slave parameter assignment error
CP fault LED
lit
Hardware fault.
Tabelle 4.2 Meaning of the Fault LED
Technical Description and Installation of the CP 5430 TF/CP 5431 FMS B8976060/02
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