4. Troubleshooting (PROFIBUS DP)
4.2.2.4 Master: Configuration Error
Master Unit LED | Error | Description | ||
BF | ST | |||
|
| |||
Red Light | No | Physical error | - Nonstandard wiring | |
ON | Matter |
| - Signal wire connection failure | |
|
|
| - Signal wire short circuit | |
♦Process Flowchart
Check | 8 |
|
|
| Check the following: | Problem exists. (Fix it.) |
No Problem |
| - Unconnected terminating resistor | |
| - Unconnected or loose connector/signal wire |
| |
|
| - Cable disconnection | See 4.2.3.1 and 4.2.3.2. |
|
|
| |
|
| No problem |
|
No Change |
| Replace moving cable. | The problem is fixed. |
|
| ||
| (Replace deteriorated cable). |
| |
|
| No change |
|
The trouble unit is not found. |
| ||
| Rarely | Does an error occur immediately? |
|
|
|
| |
|
| Immediately |
|
|
| Divide the network and | The unit is found. |
|
|
| |
|
| find the trouble unit. |
|
|
| The unit is not found. | Replace the unit. |
|
|
| Yes |
|
|
| Normal Communication? |
|
|
| No |
|
| Consult the PROFIBUS manufacturer. | Finish |
128 | Fieldbus I/O Rev.6 |
