4. Troubleshooting (DeviceNet)
♦
Process Flowchart
7
Check
Finish
The unit is not found.
Immediately
The unit is found.
Yes
No Change
No change
The problem is fixed.
No Change
The problem is fixed.
Replace the master unit.
No Problem
Problem exists. (Fix it.)
Measure voltage of
communications power supply.
Rarely
No change
Does an error occur immediately?
No Change
No change
The problem is fixed.
Check for noise influence.
Replace the unit.
No
Normal Communication?
Check the following:
- Unconnected terminating resistor
- Unconnected or loose connector/signal wire
- Cable disconnection
No Problem
Problem exists. (Fix it.)
No Problem
Check for master unit
configuration (scan list configuration).
The problem is fixed.
The trouble unit is not found.
No problem
No problem
No problem
Divide the network and
find the trouble unit.
Analyze the network with NetMeter.
Consult the DeviceNet manufacturer.
See 4.1.3.1 and 4.1.3.2.
See 4.1.3.3.
Replace moving cable
(Replace deteriorated cable).
92
Fieldbus I/O Rev.6
Summary of Contents for EM07ZS1647F
Page 1: ...Rev 6 EM07ZS1647F EPSON RC Option Fieldbus I O ...
Page 2: ...E PSON RC Option Fieldbus I O Rev 6 ...
Page 8: ...vi Fieldbus I O Rev 6 ...
Page 12: ...Table of Contents x Fieldbus I O Rev 6 ...
Page 80: ...2 Installation 68 Fieldbus I O Rev 6 ...
Page 88: ...3 Operation 76 Fieldbus I O Rev 6 ...
Page 164: ...5 Maintenance Parts List 152 Fieldbus I O Rev 6 ...
Page 168: ...Appendix A applicomIO Upgrade 156 Fieldbus I O Rev 6 ...
