4. Troubleshooting (DeviceNet)
4.1.2.5 Absent Slave
Master Unit LED | Error | Description | ||
MS | NS | |||
|
| |||
Light | Green |
| - No slave (Error detection before | |
OFF | Light | Absent slave | communication establishment) | |
| Blinking |
| - Communications power supply OFF | |
♦ Process Flowchart
Check | 8 |
|
No Problem
No Problem
No Problem
No Problem
Measure voltage of communications power supply
at the master unit.
No problem
Check the following:
-Unconnected terminating resistor
-Unconnected or loose connector/signal wire
-Cable disconnection
No problem
Check that power is supplied to all slaves.
No problem
Check for master unit configuration.
Problem exists. (Fix it.)
Problem exists. (Fix it.)
See 4.1.3.1 and 4.1.3.2.
Problem exists. (Fix it.)
Problem exists. (Fix it.)
No problem
Finish
Replace the master unit.
94 | Fieldbus I/O Rev.6 |
