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69
LED Indicators and Error Processing
Section 6-2
DeviceNet
Communica-
tions Unit,
continued
NS
Green
DeviceNet communications
are normal.
---
---
Waiting for completion of node
address duplication check.
If the problem occurs only in a particular
Slave, check the baud rate and restart the
Slave.
Red
There is a node address
duplication error at another
Unit in the DeviceNet network.
Set the node addresses again to eliminate
the duplication, and restart the Slice I/O Ter-
minal.
DeviceNet communications
stopped because of too many
data errors.
Check the following items and restart the
Slice I/O Terminal.
• Is the baud rate the same as the Master’s?
• Are lengths of cables (trunk and branch
lines) correct?
• Are cables short-circuited, broken, or
loose?
• Is terminating resistance connected to
both ends of the trunk line only?
• Is noise interference excessive?
Red
DeviceNet communications
timeout occurred.
Check the following items.
• Is the baud rate the same as the Master’s?
• Are lengths of cables (trunk and branch
lines) correct?
• Are cables short-circuited, broken, or
loose?
• Is terminating resistance connected to
both ends of the trunk line only?
• Is noise interference excessive?
Green
Online with DeviceNet, but
waiting for a connection with
the Master.
Check whether the Master has started
properly.
Check whether the Slice I/O Terminal is reg-
istered in the Master’s scan list.
Unit
LED
name
Color
Status
Meaning
Likely cause of error
NS
NS
NS
NS
NS
Summary of Contents for SMARTSLICE - 04-2008
Page 1: ...DeviceNet Communications Unit Cat No W454 E1 03 SmartSlice GRT1 DRT OPERATION MANUAL ...
Page 2: ...SmartSlice GRT1 DRT DeviceNet Communications Unit Operation Manual Revised April 2008 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 13: ...xiv ...
Page 27: ...8 Basic Operating Procedure Section 1 5 ...
Page 57: ...38 Unit Functions Section 2 3 ...
Page 101: ...82 DeviceNet Explicit Messages Appendix A ...
Page 113: ...94 Standard Models Appendix C ...
Page 115: ...96 Power Consumption Tables Appendix D ...
Page 117: ...98 I O Current Consumption Appendix E ...
Page 119: ...100 Glossary ...