Siemens SIMATIC TI500 Especificaciones Pagina 234

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Troubleshooting
9-14
SIMATIC 545/555/575 System Manual
Troubleshooting CPU Fatal Errors (continued)
When a fatal error occurs, the CPU causing the error attempts to do the
following actions:
SYSFAIL* is asserted on the VMEbus. This action causes all 575 CPUs
in the system to enter the FAULT mode.
The SYF LED is turned on.
The PCG LED is turned off.
The fault relay is opened.
I/O ports are disabled, discrete outputs are turned off, and word
outputs are held in their last valid state. (This action can be overruled
by a remote base controller configuration option.)
Communication ports are cleared and re-initialized.
Applications are reconnected to their local ports.
Pending or queued tasks are cleared.
575 CPU Responses
to Fatal Errors
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