hi everyone

i have 9 sinamics g120 drives in my project. i have to read drives buffer in plc s7-300.

now i can read them direct by using online diagnostic but i want to use some function.

i know there is DEV_FLT 4 for this purpose but i don't know how can i use it

does anyone know how can i use DEV_FLT 4 (FB39) in tia portal v15??

thanks

hi

active alarm or alarm history

sinamics g120c pn

now i use SINA_SPEED function in my project. and if there is an error on drives i can see it but i need to know exactly which error is there. sina speed just show general fault

Hi,

here is an example application with TIA how to read the message buffer. It has to be done acyclically - here done with RDREC function:

https://support.industry.siemens.com/cs/ww/en/view/70155469

@RB91

hi 

thanks for your reply

in example file they use telegram 352 which has 6 word but i used telegram 1 with 2 word and i can't change it now 

so what can i do?

Hi,

 I do not understand why the telegram lengths is confusing you. The telegram is used for the cyclic communication part. Reading the warning buffer is done acyclically without the telegram.

But anyway:

If you want to have your project similar as the application example you can simply switch your standard telegram 1 to 352 - all connections will be resolved automatically by the tool. Telegram 352 contains the same information as telegram 1 but some more feedback signals. There is also a very simple control FB for telegram 352 such as the SINA_SPEED FB for telegram 1. Here find the FB for telegram 352 which makes it easy:

https://support.industry.siemens.com/cs/de/en/view/109747655

(see LSinaExt library)

thank you so much for your helping

just one question

can i use sina speed function for telegram 352? or i have to use that function you mentioned?

Hi,

yes that's why I mentioned it: the "normal" SINA_SPEED FB is programmed for supplying the structure of telegram 1. So you would need to adapt this SINA_SPEED structure to tel 352 or even easier: just use the block from the LSinaExt lib that I mentioned. It is the same block as SINA_SPEED just for the structure of tel352 ;)