SINAMICS G120 Positioning with S7-300/400 via PROFIBUS
The solution demonstrates the connection between a SINAMICS G120 CU250S-2 drive and a SIMATIC S7-300/400 controller configured in STEP 7 to perform positioning tasks over PROFIBUS communication.
Application Objective
The drive is controlled from the PLC to execute positioning functions while enabling access to both process data and parameters with minimal communication load.
Communication Architecture
Data exchange between the PLC and the drive includes:
- Cyclic process data for real-time control signals and feedback values. SINAMICS G Positioning a G120 …
- Acyclic communication for reading and writing parameters when required, without a continuous bus load.
Positioning Functionality (EPOS)
The integrated basic positioner enables accurate positioning of linear or rotary axes using encoder feedback, supporting absolute or relative motion control.
Safety Integration
Extended safety functions such as:
- Safe Torque Off (STO)
- Safe Stop 1 (SS1)
- Safely Limited Speed (SLS)
are implemented via PROFIsafe communication to ensure safe machine operation.
Engineering & Commissioning
The example includes full configuration steps:
- Drive configuration using the STARTER software
- Hardware wiring and commissioning
- PLC program loading and parameterization
Typical Use Cases
This solution is suitable for:
Conveyor positioning systems
- Packaging machines
- Automated material handling
- Motion control retrofit projects
- Industrial axis positioning applications
Download Application File
For detailed configuration steps, wiring diagrams, and program examples, please download the full application document using the link below.
