Epson EM07ZS1647F Dokumentacja Pobierz pdf (Strona 108)

4. Troubleshooting (DeviceNet)

4.1.2.6 Uninitialized Network

Master Unit LED

MS NS

Error Description

Light OFF Light OFF Uninitialized network

Absent slave

- Master unit start-up error

- No slave (Error detection before

communication establishment)

- Communications power supply OFF

♦ Process Flowchart



No Problem

Check

Check the following:

- Unconnected terminating resistor

- Unconnected or loose connector/signal wire

- Cable disconnection

Finish



No Problem



No Problem



No Problem

Problem exists. (Fix it.)

No problem

Measure voltage of

communications power supply

at the master unit.

Check that power is supplied to all slaves.

Check for master unit configuration.

Replace the master unit.

See 4.1.3.1 and 4.1.3.2.

96 Fieldbus I/O Rev.6

1 2 ... 103 104 105 106 107 108 109 110 111 112 113 ... 167 168

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Epson EM07ZS1647F Dokumentacja Strona 108