
Publication 1756-UM532A-EN-P - May 2006
Troubleshoot the 1756-DH485 Module
B-3
Interpret the Alphanumeric
Indicators
Your 1756-DH485 module displays alphanumeric codes that provide
diagnostic information about your module. The alphanumeric display flashes
the codes at approximately one-second intervals. This table summarizes the
codes.
Alphanumeric Display Descriptions
Message
Description
Recommended Action
ONLY NODE
Only node on
DH-485 link.
Check the cables.
OFF LINE
DH-485 link is in STOP
state.
Correct the configuration.
DUPL NODE
DH-485 Duplicate
node address.
Choose another node address.
ONLY NODE
Only node on
DH-485 link.
Check the cables.
OFF_LINE
Not trying to
communicate.
None. Normal state if controller is not
controlling remote I/O.
OK
Normal operation.
None.
Содержание ControlLogix 1756-DH485
Страница 1: ...ControlLogix DH 485 Communication Module 1756 DH485 User Manual...
Страница 8: ...Publication 1756 UM532A EN P May 2006 Preface ii Notes...
Страница 18: ...Publication 1756 UM532A EN P May 2006 1 10 1756 DH485 Module Overview Notes...
Страница 32: ...Publication 1756 UM532A EN P May 2006 2 14 Overview of the DH 485 Network Notes...
Страница 72: ...Publication 1756 UM532A EN P May 2006 6 12 Communicate Between SLC Controllers over DH and DH485 Networks Notes...
Страница 102: ...Publication 1756 UM532A EN P May 2006 B 6 Troubleshoot the 1756 DH485 Module Notes...
Страница 106: ...Publication 1756 UM532A EN P May 2006 iv Index Notes...
Страница 109: ......