Recommended procedure for diagnostics
It is useful to divide the error causes into several categories to allow for fast and accurate diagnostics:
- Software errors, for example:
- Slave not configured correctly in the IEC Editor: e.g. configuration of basic functions or of process data.
- Faulty processing of process data.
- Synchronization loss.
- Hardware errors, for example:
- Connection is interrupted between individual stations in the network, e.g. caused by a broken cable or loose contact.
- EMC problems in the plant.
- Malfunctions or voltage failure in the slaves.
The following diagram provides support in troubleshooting. A distinction is made between errors that occurred during startup and errors that occurred during runtime:
