How to access technology object parameters like position, actual position?

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Split from can I connect technology objects directly from tia portal to MCD without simit?.

Hello,

it is possible to read the TO variable in the TIA project.

A.2 Tags of the positioning axis/synchronous axis technology object

Access to the tags is with ".". The placeholderrepresents the name of the technology object.

https://support.industry.siemens.com/cs/ww/en/view/109749262 

Thank you,

i want to make DB where i can store TO.position value. I put image, there is DB4 and i named as you said but nothing happens? 

And when i use "check active simulation" in axis configuration window, and when i try to simulate  movement for example with MC_MoveRelative, i got instant values of desired posiition and velocity? How to change position so it is the same as using a real drive or similar to that behavior, and without simit? 

Hello,

when you have a real PLC, you can use virtual axis for TO.

When you have no PLC you can use PLC-Sim and use virtual axis for TO.

Every Technologyobject has systemvariables. 

You an use this systemvariables in your program.

They are decribed in the manual. Last chapter. A1  - A7 see following link:

https://support.industry.siemens.com/cs/ww/en/view/109749262

Thank you again,

here is the problem. I don't have access to hardware (SINAMICS V90 drive, CPU 1511T-1PN,  and 2x servo motors), and i won't be able to access it any time soon. I want to simulate rotation of shaft of servo motor in NX MCD. I use plc sim advanced 2.0 sp1, but i can't access PositioningAxis_1.Position tag in NX. And  how should i set parameters in PositioningAxis Configuration window? Do I have to check active simulation and virtual axis, or just one of them. If i don't check active simulation when i try to change position with MC_MoveRelative it doesn't change position in Diagnostics->Motion Status.

I still have problem accessing tags from TO to NX. Do i have to make new DB and put that tags and how?

Hi Luka,

there are different ways:

• Virtual PLC: You can connect NX MCD with your PLCSIM Advanced instance
  See this example: SIMATIC S7-1500T - Virtual commissioning for kinematics in NX MCD with Software in the Loop 
• Real PLC: Open a OPC UA server on your PLC and connect to it in NX MCD (as client)

However, it's not just one click. There are a lot of steps to do if you want to use the variables of the technologicalobjects.

It would be way easier if you use SIMIT as well. The connection is very easy. You can find a getting started here: SIMATIC Machine Simulator Virtual commissioning of machines Getting Started 

There is a great training at SITRAIN as well (German only): Totally Integrated Automation im Digital Enterprise – Virtuelle Inbetriebnahme für Maschinen (DI-VIRTCOM) 

Hello,

one further info.

Beside MCD there are other possibilities to test program sequences.

You can get info about in following chapter

https://support.industry.siemens.com/cs/ww/en/view/109749262

Thank you,

but with virtual commissioning for  kinematics in MCD, it uses some aditional libraries for kinematics. I just want to use MC_Power and MC_MoveRelative to set desired postion on motor shaft (i have 3d model of servo motor). Simit demo is not option thus it only support one axis, i don't have money now for simit S.