TM 5-3895-374-24-1
Chapter 9
Troubleshooting
TROUBLESHOOTING CONSIDERATIONS
GENERAL ERROR
SCREEN
ATTEMPTED
FUNCTION
PROBABLE
CAUSES
RECOMMENDED ACTION
The Maximum Node
Address Of The
Previous Node Is
Lower Than The
Module Address
Change the maximum node
address of the previous node
Duplicate Node
LED Flashing Red
Module Has Same
Node Address As a
5/02 or 5/03(Point-to-
Point Connection)
Change the module node
address
LED Flashing Red
Module Has Same
Node Address As
Another Node(DH-
485 Network
Connection)
Change the module node
address
No Response
LED Illuminated Green or
Flashing Green
The Node That The
Module Is Attached
To Has Too Many
Other Nodes Trying
To Communicate
With It
Decrease the network traffic to
the desired node address
XX Is inactive ?
LED Illuminated Green or
Flashing Green
The Processor At
That Node Address Is
Not Powered Up
Power up the processor
The Processor At
That Node Address Is
Disconnected From
The Network
Activate that processor on the
network.
A Fault Has Caused
That Processor Node
Address To Change
To a Default Of One
Change the processor node
address
The Processor Is Set
At The Wrong Baud
Rate
Change the processor baud rate
XX Is not a CPU ?
LED Illuminated Green or
Flashing Green
The Node Address
You Are Attempting
To Attach to Is a
Programming Device
Or Another DTAM
Abort
A Programming
Device Has Been
Connected To The
Network With The
Same Node Address
As a Processor
Change the node address of the
programming device
XX not supported ?
LED Illuminated Green or
Flashing Green
The Node Address
You Are Attempting
To Attach To Is a
Non-Supported
Device
Abort
Contact your local Allen-Bradley
sales office
? Where XX is the Node Address Value.
page 3-400