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