Technical data

Technology objects
CPU 317T: Technology Functions
A5E00251798-03
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3.8 "External encoder" technology object
Use the "External encoder" technology object to provide a
control value to the technology CPU, based on the position
or angle of a mechanical component. This information can
also be passed directly as actual value to the runtime of a
process visualization system.
The "External encoder" technology object returns the actual position, velocity and
acceleration values of a path measurement system, without active influence on the
drive component.
Technology functions
Technology functions available for the technology object:
MC_Reset MC_ExternalEncoder MC_ReadSysParameter
MC_WriteParameter
3.8.1 Interconnection, Connection - External encoders
Interconnection
The "External encoder" technology object can be interconnected with the following
technology objects:
• "Synchronization axis" TO as leading axis
• "Cam" TO as actual position value
• "Measuring sensor" TO as actual position value
Connection
External encoders can be connected to the ADI4, or to the encoder inputs of DP
drives. The SIMODRIVE Sensor Isochron is connected to PROFIBUS (telegram
81).
Examples
• On the SIMODRIVE 611U, the second encoder interface on a double-axis
module can be used to connect an external encoder.
• A second encoder can be connected to MASTERDRIVES MC via an encoder
module.
• Clocked PROFIBUS encoders can be operated directly on DP(DRIVE).