Distinguish between different Diagnostic Interrupts

Hi,

Is it possible to distinguish what caused a diagnostic interrupt? For example, on a remote IO station I have a rack that has a IM155-5 PN HF (6ES7155-5AA00-0AC0) and a AI Card (6ES7531-7KF00-0AB0) mounted. This AI card will generate a diagnostic interrupt at the following events:

• No supply voltage L+
• Wire Break
• Overflow
• Underflow
• Common mode error; and
• Reference channel error.

These events have all been selected in the hardware configuration for the AI card.

If this AI card generates a diagnostic interrupt is it possible to determine which of the above events caused the diagnostic interrupt? Was it the “No supply voltage L+” or “Wire Break” or “Overflow” etc.?

If it is possible to distinguish what event triggered the diagnostic interrupt is it then possible to extract this information so that I can generate an alarm for each event “No supply voltage L+” or “Wire break” or “Overflow” etc. in the Program Blocks of TIA portal?

I have looked everywhere in Siemens forums, sites and manuals however I cannot find an answer which is leading me to think that you cannot distinguish between the events. So basically if this card generates a diagnostic interrupt you cannot pinpoint the exact event/fault.

This remote rack is connected via profinet back to another rack with CPU (6ES7516-3FN01-0AB0) mounted.

Any help would be greatly appreciated.

Kind Regards,

Scott

Hello,

It is possible. Signal modules diagnostic data is stored in data records 0 & 1. By configuration with corsponding OB, SFC. the same can be accessed. 

Please refer the attached sheet for detailed information of signal modules diagnosis for different events.

HTH 

 Muilt error diagnostic

Maybe the above thread will give you some insights about multi error diagnostics. I raised the thread, but unfortunately couldn't find a solution in Central Periphery. In Decentral Periphery, It is possible with some modules for individual channel diagnostics. The above link is just a reference case with S7-1200 with AI module. Maybe it helps to understand something.

Just give it a try with reading.

Thanks,

Jay

ScottHarrisiii

Thanks guys. I ended up using RALRM to gather diagnostic interrupts and distinguish between the types of faults, however if I have more than 2 faults generated (1 on channel 1 and 1 on channel 2), it only shows the latest fault generated. Is there a way to show both/unlimited amount of faults using RALRM?

I used the following link:
https://cache.industry.siemens.com/d...g82_v20_en.pdf

Cheers,
Scott