Troubleshooting and diagnostic options
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9.5 Data status
The transmitted data are generally provided with a status during cyclic real-time communication. Each
subslot has its own status information: IOPS/IOCS. This status information indicates whether the data
are valid = GOOD (1) or invalid = BAD (0).
During parameterization and at start-up the output data may temporarily change to BAD. If the data
change back to GOOD status, a “Return-Of-Submodule-Alarm” is transmitted.
The status is not set to BAD in the case of a diagnostic alarm.
Example: Input data IO device --> IO controller
Example: Output data IO controller --> IO device
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