4. Troubleshooting (PROFIBUS DP)
| 4.2.2.1.2 Slave: Data Link Error |
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| MS | NS |
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| Master LED Condition | Light OFF | Red Light Blinking |
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| Absent Slave LED Condition | Light OFF | Red Light ON |
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| (Data link error) | ||
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♦ Process Flowchart |
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Check | 3 |
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| Check the following: | Problem exists. (Fix it.) |
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No Problem |
| - Unconnected terminating resistor |
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| - Unconnected or loose connector/signal wire |
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| - Cable disconnection | See 4.2.3.1 and 4.2.3.2. | |
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| No problem |
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No Change |
| Replace moving cable. | The problem is fixed. |
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| (Replace deteriorated cable). |
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| No change |
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No Change |
| Check for noise influence. | The problem is fixed. |
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| See 4.2.3.3. | |||
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| No change |
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The trouble unit is not found. |
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| Rarely | Does an error occur immediately? |
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| Immediately |
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| Divide the network and | The unit is found. |
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| find the trouble unit. |
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| The unit is not found. | Replace the unit. |
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| Normal Communication? | Yes |
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| No |
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| Consult the PROFIBUS manufacturer. |
| Finish |
Fieldbus I/O Rev.6 | 119 |
