Read current with Sina_Para, for G120C and TIA V15.1

Hello:

I used Sina_Para in TIA V14 to read the current of a motor controlled by a G120C. Now, I want to do the same with TIA V15, but I see library is changed and I can't find how to do it again... please, any example or picture of how to do it? I think it must be easy but now I', blocked....

Thanks

Hi,

in general it must work the same way - I think there were some minor changes over the different versions. 

So first of all please download the correct version of the DriveLib here (e.g. for TIA V15 in your case):

https://support.industry.siemens.com/cs/de/en/view/109475044

With that FB it should be easy for you.

Remember to set the correct Hardware ID (use the one from the cyclic telegram - this works always). The rest just do as written in the manual ;)

Did you search your TIA Portal instructions for SINA_PARA?  I believe you will the drive library has been included as part of the built-in instruction set (instead of an add-on library).

The F1-Help should get you pretty quickly.

I don't know anything about G120C, but if your drive allows telegram 352, I recommend using that because it provides actual current automatically every update of the telegram's process image.

No need to mess around with SINA_PARA at all in that case.

If the G120C does not offer the flexibility to use telegram 352, if it allows supplementary data to be sent with the telegram, I recommend configuring that option and add the actual current added to the telegram.

It really is simpler (my opinion), or maybe it's simpler during commissioning because you do not need to figure out the correct HW ID (LADDR) or the parameter # or even get yourself in a situation where you need the LAcycCom library to manage the PN comms with the drives.  Having it the telegram removes that potential requirement.

FYI, LAcycCom is a very nice library that fits a very real need.  However, avoiding the need by having things in the telegram is well worth the little effort needed to get it working.

You may never run across a project requiring the LAcycCom library, so that part of it may never apply to you.  But if it might, not having to deal with it is nice.

I have a project that required it - until I found a way to get the extra parameter(s) into the telegram.  I immediately ripped out LAcycCom, which made the PLC logic get solved more often, resulting in tighter control and a happier customer.

eltiu

Hello:

I used Sina_Para in TIA V14 to read the current of a motor controlled by a G120C. Now, I want to do the same with TIA V15, but I see library is changed and I can't find how to do it again... please, any example or picture of how to do it? I think it must be easy but now I', blocked....

Thanks

Ok, it was really easy. I had a mistake with a type of data... 

Thanks 0_Einstein and RB91

Did you end up using SINA_PARA and correct the datatype to a DWord / DInt, and then convert to Real?  Depending on which parameter you retrieved, it might have been word / dword (or even real).

eltiu

Ok, it was really easy. I had a mistake with a type of data... 

Thanks 0_Einstein and RB91