Publication 1734-UM001D-EN-P - April 2008
154
Troubleshoot with the Indicators
Troubleshoot I/O
Communication Modules
The status indicators on the communication modules provide system power
and DeviceNet power indications.
1734-PDN DeviceNet Communication Interface Module
System Power
DeviceNet Power
Indicator
Indication
Probable Cause
Recommended Action
System Power
Off
•
Device is not active.
•
DeviceNet power is off, or
dc-dc converter problem is
present.
1. Verify DeviceNet power is on, and apply power if needed.
2. Verify backplane power not exceeded, and correct, as needed.
3. Replace 1734-PDN module.
Green
•
System power is on.
•
dc-dc converter is active
(5V).
None.
DeviceNet Power Off
•
Device is not active.
•
DeviceNet power is off.
Apply DeviceNet 24V power.
Green
Power is on with 24V present.
None.
Summary of Contents for 1734-IA2
Page 4: ...Publication 1734 UM001D EN P April 2008 4 Summary of Changes Notes ...
Page 12: ...Publication 1734 UM001D EN P April 2008 12 Table of Contents Notes ...
Page 77: ...Publication 1734 UM001D EN P April 2008 Install POINT I O Modules 77 ...
Page 78: ...Publication 1734 UM001D EN P April 2008 78 Install POINT I O Modules ...
Page 179: ...Publication 1734 UM001D EN P April 2008 Default Data Maps 177 Notes ...
Page 180: ...Publication 1734 UM001D EN P April 2008 178 Default Data Maps ...
Page 236: ...Publication 1734 UM001D EN P April 2008 234 Notes ...
Page 241: ......