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4. Troubleshooting (PROFIBUS DP)
4.2.2.1.3 Slave: Uninitialized Network
BF ST
Master LED Condition
Light OFF Red Light Blinking
Absent Slave LED Condition
(Uninitialized Network)
Light OFF Light OFF
♦ Process Flowchart
4
No Problem
Check
Check the following:
- Unconnected terminating resistor
- Unconnected or loose connector/signal wire
- Cable disconnection
Finish
Measure voltage of all
slave power supplies.
No Problem
No Change
No
Problem exists. (Fix it.)
Problem exists. (Fix it.)
The problem is fixed.
No problem
No problem
No change
Replace the unit.
Yes
No
See 4.2.3.1 and 4.2.3.2.
Consult the PROFIBUS manufacturer.
Replace moving cable.
(Replace deteriorated cable).
Normal Communication?
Fieldbus I/O Rev.6 121