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RS485 interface



Output circuit and recommended input circuit RS485

Encoders with internal termination have a fixed terminating resistor Rt built in.
This variant is designed for point-to-point transmissions between 2 devices.

With devices having external termination the user must activate the terminating resistor by placing a jumper between pins 5 and 6. This option is suitable to the construction of bus systems with several encoders.

With bus systems, the EIA-485 standard recommends terminating each end of a data link circuit with a terminating resistor.
The RS485 interface is asynchronous. In half duplex operation it is not possible to send and receive at the same time. The data transmission is controlled via ESC commands.

 

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Download Basics - Encoder
Download Basics - Counters Process Device
Download Basics - Transmission_technology
Download Basics - Functional Safety

 

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