We have a 416-2DP with a profibus network, that had these slaves:

IM153-S5 

IM151-1

IM151-1 (installed 6 months ago)

1 collegue installed the last one, and everything worked fine since than.

Other collegue modified IP adresses in the PLC 416, and made a download.

Since than the IM151-1, the last one is not reachable.

On the module itself the BF led is blinking. 

The two powermodule PM-E 24VDC  has de SF led on, and feeds 10 input cards, and 4 output cards. 

I suspected that the HW Config was not up to date, i checked adresses, every single order-number of every IO card. No faults.

I checked the connector, looks fine.

Mesured the 24V, perfect.

Checked accecidble nodes, I see all exept this one.

I removed all cards except one (with terminal block), downloaded the new config, same result.

Hooked up PG straigt to the island, couldn't see the it (diagnisics profibus nodes)

Replaced the IM151 with a new one, same result.

I'am kinda out ways to resolve this. Any suggestions?

No adress conflict, 1-2-3-4 and PG has 0

Hello Fil-Ley;

You seem to have tried most of the recommended interventions required In such a situation.

Have you opened the diagnostic buffer of the CPU?

It logs diagnostic messages on all events that cause the appearance of a SF or BudF LED, amongst other things.

It should give you ideas on what the CPU is complaining about.

If you need help understanding the diagnostic messages, use the Save As... button on the diagnostic buffer page to save the messages in a .text file that you can attach here. We could then help you better.

Hope this helps ,

Daniel Chartier 

Just I/O error when writing / reading... which is a result of the conflict, not the cause.

Testing with other ET200m modules has tought me that if you change something in the hardware (remove card, swap cards,...) the ET200 goes offline, and you can guess what the cause is. Put is back like it was, and the ET200 goes back online.