4. Troubleshooting (PROFIBUS DP)
4.2.2 Problems and Countermeasures
Master Unit LED | Error | Description [Reference] | ||
BF | ST | |||
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| |||
Light | Green | Normal | - Normal condition | |
OFF | Light | communication |
| |
| Blinking |
|
| |
Light | Green | Ready for | - Normal condition | |
OFF | Light ON | communication |
| |
Light | Red | Communication | [Refer to the section 4.2.2.1 Master | |
Communication Error.] | ||||
OFF | Light | error | ||
- Slave disconnected from the network | ||||
| Blinking |
| ||
|
| (Remote I/O communication error) | ||
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|
| ||
|
|
| - Slave not added to the network (Scan list | |
|
|
| collation error) | |
|
|
| - Nonstandard wiring | |
|
|
| - No or too many terminating resistors | |
|
|
| - Noise intrusion | |
Light | Red | Data link layer | [Refer to the section 4.2.2.2 Master: Data | |
OFF | Light ON | error | Link Layer Error.] | |
|
|
| - Nonstandard wiring | |
|
|
| - Noise intrusion | |
Light | Light | Uninitialized | [Refer to the section 4.2.2.3 Master: | |
OFF | OFF | network | Uninitialized Network.] | |
|
|
| - Master unit power error | |
|
|
| - Master unit configuration error | |
Red | No | Physical error | [Refer to the section 4.2.2.4 Master: | |
Light ON | Matter |
| Configuration Error.] | |
|
|
| - Nonstandard wiring | |
|
|
| - Signal wire connection failure | |
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|
| - Signal wire short circuit | |
114 | Fieldbus I/O Rev.6 |
