4. Troubleshooting (PROFIBUS DP)
| 4.2.2.1.4 Slave: Physical Error |
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| BF | ST |
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| Master LED Condition | Light OFF | Red Light Blinking |
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| Absent Slave LED Condition | Red Light ON | No Matter |
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| (Physical error) | ||
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♦ Process Flowchart |
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Check | 5 |
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No Problem | Measure voltage of all | Problem exists. (Fix it.) |
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slave power supplies. |
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No problem
Replace the unit.
Yes
No | Normal Communication? |
No
Consult the PROFIBUS manufacturer.Finish
♦ Causes of Error
Possible Cause | Examination Method | Countermeasure |
{ Electrical surges | Measure voltage of device | Check voltage of the |
of device power | power supply at the trouble | device power supply. |
supply | unit. |
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| → It should be within the |
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| range of sufficient voltage |
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| for device operation. |
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{ Broken unit | Replace the trouble unit with | Replace the unit with a |
| a new one. | new one. |
| → Verify whether the |
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| problem is fixed. |
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Fieldbus I/O Rev.6 | 123 |
