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4. Troubleshooting (DeviceNet)
4. Troubleshooting
4.1 DeviceNet Troubleshooting
Exclusion
Every system has its special environment, conditions, specifications, and usages. This guide
is provided as a general reference for troubleshooting a DeviceNet network. Every effort has
been made to ensure the information is accurate. However, we do not guarantee the complete
accuracy of the information and thus we decline any liability for damages or costs incurred by
the use of this troubleshooting.
Before examining a problem on the network, please ensure that your established DeviceNet
system satisfies network specifications. (Refer to this troubleshooting and the section 2.2
DeviceNet Network Construction.)
Tools
Prepare the following tools for troubleshooting.
Philips screwdriver
Flat-blade screwdriver
Tester
Using the Woodhead NetMeter (DeviceNet diagnostic tool) is a simple way to learn physical
status of the DeviceNet network. For details of NetMeter, see Woodhead’s Web site
(http://www.mysst.com/diagnostics/NetMeter.asp).
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HINT
Fieldbus I/O Rev.6 77