4. Troubleshooting (PROFIBUS DP)

 

4.2.2.1.2 Slave: Data Link Error

 

 

 

 

 

MS

NS

 

 

Master LED Condition

Light OFF

Red Light Blinking

 

 

Absent Slave LED Condition

Light OFF

Red Light ON

 

 

(Data link error)

 

 

 

 

♦ Process Flowchart

 

 

Check

3

 

 

 

 

 

 

 

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

 

 

† No Change

 

Check for noise influence.

The problem is fixed.

 

 

See 4.2.3.3.

 

 

 

 

 

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.

 

 

 

 

 

 

 

 

Normal Communication?

Yes

 

 

 

 

 

 

 

No

 

 

 

Consult the PROFIBUS manufacturer.

 

Finish

Fieldbus I/O Rev.6

119

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Image 131
Epson EM07ZS1647F manual Absent Slave LED Condition, Data link error