Motion Control Unit: The Advantages And The Terms

Maybe you have heard about the term MCU and thought about its meaning. In this article, we will define the term and tell you more about the advantages of the Motion Control Unit.

But before we start, what is the definition of MCU?

MCU or the Motion Control Unit is placing control for a single axis. The function of the Motion Control Unit is adapted in a slide-in module without a specific case, offered to employ in several power modules of the Siemens SIMODRIVE 611 drive series. Via the insertion of the Motion Control Unit module, the power module turns out to be a one-axis positioning control.

Through the insertion of the MCU module, the power module becomes a single-axis positioning control.

What are the advantages of the MCU?

1-Saving costs and space 

Besides the positioning function, all of the commands of a SIMATIC S7-300 CPU do exist, so no single programmable logic controller and FM 354 positioning modules are required. Plus, the cabling of a functional unit is wanted too. 

2-Minimizing time spending 

Having a complete digital concept, the system can work quicker than with analog technology. Plus, it is possible to make a safe diagnosis up to the drive, leading to the improvement of the availability.

As the criteria are exclusively incorporated in the Motion Control Unit, the designing and training costs hugely decrease. Thanks to the incorporation, we can save planning and cabling costs.

3-Improving the dynamics

Digital technology allows higher speeds and many more.

Via the authorized missions incorporated in MCU-PIT, the dynamic of the whole system can be enhanced.

4-Increasing the flexibility

The Motion Control Unit can be connected to any power module of the Simodrive 611 series. Major linkings are made by choice through an open-circuit supply module or a condemned supply/re-supply module of the SIMODRIVE 611 device series.

Up to three Motion Control Units can be run on a single power supply per any monitoring module added, another three Motion Control units can be linked. 

The existing software groups MCU-PIT, STEP 7, and SIMOPRO are in the Windows criteria, so an axiomatic and easy process is provided.

5-It saves training 

Due to the integration of the SIMATIC S7 CPU in the Motion Control Unit and because the SIMATIC is so common, human beings will fastly get used to the system. 

The connection between the incorporated S7-CPU and positioning thing is affected by the criteria software “technology tasks”, which relies on the technical tasks for FM modules from the S7-300 series.

The traversing software is written in the NC language, like the DIN 66025. The NC language is popular in various fields of technology.

What are the MUC terms? 

a-One axis

The Motion Control Unit is a one-axis positioning control.


The Motion Control Unit can work through visualization systems, including OP with MPI interface. A human being can either utilize standard displays or create user-specific displays.


The Motion Control Unit is very suitable for decentralized positioning missions. 


The hardware of the Motion Control Unit is adjusted on a module that is linked to any power module of the SIMODRIVE 611 drive series.

f-Global data 

Through the service “Global Data”, we realize the exchange of cyclical information. In this way, Motion Control Unit can quickly connect in a standard method. 


The Motion Control Unit’s one-axis positioning control owns an incorporated IM 360, which can attach 24 S7 peripheral modules to it.


The Motion Control Unit owns an incorporate multipoint interface MPI through which it

can be connected. The linking to the network with the PROFIBUS-DP is affected through the communication processor CP 342-5.

To get additional information about this topic, you can visit the MRO Electric official website. 


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