GE Mark VIeS - Page 467

360
Description Internal Runtime error - Sequencer frame period out-of-bounds (±15%)
Possible Cause Possible hardware malfunction. Frame period greater than ±15% of nominal. This alarm occurs
following frame period out-of-bounds condition occurring three frames in a row. After five frames in a row, the I/O module is
put into FAILURE control state.
Solution
• Ignore this alarm if it occurs during a restart of the I/O module.
• Replace the I/O module, if the alarm occurs during normal operation.
361
Description Internal Runtime error - Sequencer frame state timeout out-of-bounds (±15%)
Possible Cause Possible hardware malfunction. Sequencer frame state timeout greater than ±15% of nominal. This alarm
occurs following a sequencer frame state timeout being out-of-bounds for three frames in row. After five frames in a row, the
I/O module is put into FAILURE control state.
Solution
• Ignore this alarm if it occurs during a restart of the I/O module.
• Replace the I/O module if the alarm occurs during normal operation.
362
Description Internal Runtime error - Sequencer frame number skip detected
Possible Cause Possible hardware or IONet malfunction. Frame number skips detected. Frame number should
monotonically increase until rollover. This alarm occurs following three skips in a row. After five skips in a row, the I/O
module is put into FAILURE control state.
Solution
• Ignore alarm if it occurs during a restart of the I/O module.
During normal operation:
• Check for hardware or network switch malfunction.
• Check for loose or defective network cables.
• Replace the I/O module.
363
Description Memory Validation failed - Sequencer data structures
Possible Cause Hardware memory failure (sequencer process data that should not change after the I/O module is online
was modified).
Solution Replace the I/O module.
Common I/O Module Functionality GEH-6855_Vol_II System Guide 467
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