RSLogix 5000 "I/O not repsonding"

When I am online to Controllogix, I see "I/O Not Responding" is flashing.
Am I right in assuming that this is because my spare I/O is not connected?

NetNathan said:

When I am online to Controllogix, I see "I/O Not Responding" is flashing.
Am I right in assuming that this is because my spare I/O is not connected?

Click to expand...

Yes or something is wrong with config.

Go to the IO Configuration section of the project organiser, and follow the yellow warning triangles to any modules that are causing problems.

Double-click the module to bring up the properties, and go to the "Connection" tab.

On that page you will see the precise cause of the error.

I do not have any warning triangles and all installed I/O has been verified.
However...I do have unconnected analog I/O that is spare and and also spare digital I/O that is on diagnostic modules.
The spare Analog and Digital I/O is on Point I/O.

I would have bet a hot donut that you were going to find a warning triangle, since that's the usual indication of an I/O connection that's not running.

Just having I/O modules connected to a 1734-AENT adapter but not in the I/O tree isn't enough to get an "I/O Not Responding" condition.

Could you have a Consumed Tag from another ControlLogix-family controller that's not configured or operating correctly ?

I've never seen the "I/O Not Responding" light flashing in the absence of a broken I/O module, motion axis, or Consumed Tag connection.

Got it...I think...
I do have some yellow triangles on my AB drives (525 and 755).
I am talking Ethernet/IP to the 2 AB drives. However the drives are not always powered up.
So, when power is off, there is no response from the drives across Ethernet/IP.

I will power them up tomorrow an see if triangles go away and also "I/O not responding" is resolved.

The "I/O Not Responding" indications and the yellow warning triangles are one and the same thing.

You get an "I/O Not Responding" condition because at least one of the connections required in the I/O tree (or Produced/Consumed tags) is not made.

The warning triangles help you to locate where the problems physically are.

In other words, you get warning triangle(s) because you have an I/O not responding situation.

Thanks for clarifying that the yellow triangles and "I/O not responding" are one in the same...