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Hello We have an Siemens S7-315 CPU and several Sinamics CUs and drives. One of the drives have a fault and I was trying to figure out what the problem is. I was online with Simotion Scout then suddenly I dropped offline and when I checked out the panel I saw Sinamics have all leds red and 315 CPU's...

I think so.

That is not a big problem also dont need to be online when everything is setup and machine begins to work.

Thanks for your help.

Here is what the diagnostic buffer tells us: OB request error No reveleance for user Z1(0000) Cause: CYCLIC INTTERRUPT PULSE GENERATOR 6 Causing OB: OB35 Requested OB: OB80 This test is done with CPU 313C beacuse I dont have the 315 CPU right now because it hasnt arrived yet... The interesting thing...

I am not at the company right now.Tomorow the very first thing I will do is to check the diagnostic buffer and write down here. Thanks for your interest pal.

Hello Venix

Thanks for your reply but I get SF even at 10ms I did try 1ms with ob35 but the CPU always gives SF so your advice doesnt work. Thanks anyway.

venix wrote:Hello!

Time interval for trigerring 1ms to 1 minute(incremmented by 1 ms).

Best regards!
Venix

How can I call the interrupt trigered each 1ms?
Thanks

Hello I am having a problem with OB35 I am calling OB35 with 100Hz frequency each 10ms and sometimes PLC gives SF. What is the real limit for OB35? Also I have a bigger problem. I have to produce a 6Hz sine wave with 315-2dp but I cant manage to create a proper sinewave with 100Hz. I only have 16 sa...