ФункцииCentralized technology
In the centralized solution with SIMATIC M7, the technological functions are used on the FM 356-4 and FM 456-2 1).
The drives communicate with each other and with the SIMATIC M7 system over the SIMOLINK drive interface. This enables setpoints and actual values to be exchanged at high-speed synchronous to the control task.
SIMOLINK is implemented as a fiber optic ring and synchronizes up to 200 drives. The transfer of 100 32-bit variables takes only 630 ms, for example. The transfer of setpoint and actual values is synchronized with the system cycle.
If the drives are networked via PROFIBUS-DP, drive parameters can be exchanged between SIMATIC S7 and SIMOVERT MASTERDRIVES MC (centrally and decentrally) during operation.
With a centralized system on the SIMATIC M7, digital SIMOVERT MASTERDRIVES MC drives are used. In this case, the optional technology package is not needed with SIMOVERT MASTERDRIVES MC.
The runtime package for SIMATIC M7 contains standard applications for FM 356-4 and FM 456-2 1). The package includes the complete Motion Control functionality in the form of a finished application. It is neither necessary nor possible to modify the application using CFC.
If required, we will develop customized solutions on the SIMATIC M7 using graphical CFC configuring.
Distributed technology
The technological functions are integrated in SIMOVERT MASTERDRIVES MC; they are available as a software option.
In addition to the technological functions for positioning and synchronization, logical and mathematical blocks (AND, OR, compare, add, subtract, etc.) are available on the SIMOVERT MASTERDRIVES MC and can be used freely by the user.
The technological functions and the logical and mathematical blocks can be interconnected by the user via parameters.
Standard configurations are also available here to facilitate configuration and start-up.
Application interface to S7 CPU
The application interface to the S7 CPU has the same structure with centralized and distributed technology.
Communication between the S7 and M7 systems and between S7 and SIMOVERT MASTERDRIVES MC takes place via control and checkback signals. These signals define the operating mode, for example, or start the axes. The checkback messages from the technology functions are also entered in this interface.
A task-oriented data interface allows technology and drive parameters to be read and written.
Technological functions
Motion control provides the following technological functions:
Axis types:
Positioning:
- Position controller with feedforward control
- Setup: Position controlled traversing of the axis in Jog mode
- Reference point approach: Referencing of the axis using various methods
- Positioning/MDI (Manual Data Input)
- Simultaneous transfer and starting of a positioning task
- Selection of configured positioning tasks
- Automatic
- Execution of complete positioning programs cyclically or in single-step mode
- Program-controlled output of switching functions (M functions)
- Block change on-the-fly via high-speed input
- Start/read enable via high-speed input
Synchronization:
- Angle synchronization/electronic gearbox
- Long-term stable angle synchronization with a transmission ratio of 1:5 to 32,000:1
- Input of transmission ratio as nominator and denominator in the range from 1 to 32,000
- Electronic cam disk/table interpolation
- Implementation of complex axis couplings, e.g. flying saw, flying knife
- Table change on-the-fly
- Linear interpolation between profile points
- Coupling/decoupling: Accurate incremental engaging or decoupling of a slave axis
- External synchronization of the slave axis via a high-speed input (e.g. printed marking)
- Master axis
- Internal master axis, position-controlled
- External master axis, external setpoint input
- Virtual master axis, master axis not available, internal generation of master actual value
Cam controller:
- High-speed switching output
- Free assignment of a setpoint or actual value position
- Two cam controllers with two cams each
1) In preparation.
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