Epson EM07ZS1647F User Manual page 101

4.1.2.3 Master: Unestablished Communication
Green
Light ON
♦ Process Flowchart
Check
No Problem
No Problem
No Problem
No Problem
Fieldbus I/O Rev.6
Master Unit LED
MS NS
Light Master
OFF Unestablished
communication
6
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.
No problem
Replace the master unit.
4. Troubleshooting (DeviceNet)
Error
Communications power supply OFF
No slave
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.)
Description
Finish
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