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Servo drive communication module

Products and reference designs
Block diagram

Servo drive communication module

Block diagram

Overview

Our integrated circuits and reference designs help you create a servo drive communication module for safe, secure and reliable communication links to external motion controllers and programmable logic controllers (PLCs).

Design requirements

Servo drive communication module designs often require:

  • Flexibility to execute a variety of industry standard and proprietary protocols.
  • Support for different real-time protocol stacks.
  • Low-latency, low-bit-error and EMC immune interfaces.
  • Highly-efficient, sequenced and supervised voltage rails for reliable operation.

Block diagram

Find products and reference designs for your system.

Servo drive communication module

Control board connection Control board connection Industrial Ethernet and/or proprietary interface Industrial Ethernetand/or proprietary interface Antenna Antenna Fieldbus and/or proprietary interface Fieldbus and/or proprietary interface VDD VDD To Fieldbus interface To Fieldbus interface Non-isolated DC/DC power supply Non-isolated DC/DCpower supply Supervisor sequencer Supervisor sequencer PMIC PMIC LDO LDO DC/DC DC/DC Isolated DC/DC for interfaces Isolated DC/DCfor interfaces PWM controller PWM controller FET FET Wireless interface Wireless interface Wi-Fi Wi-Fi NFC NFC Bluetooth Bluetooth Sub-1 Ghz Sub-1 Ghz Board to board protection Board to board protection Protection Protection Board to board interface Board to board interface Transceiver Transceiver Interface translator Interface translator Buffer Buffer Digital processing Digital processing MCU MPU MCUMPU Industrial Ethernet interface Industrial Ethernet interface Ethernet PHYs Ethernet PHYs Ethernet protection Ethernet protection Protection Protection Clocking Clocking CLK distribution CLK distribution Fieldbus interface Fieldbus interface RS485 RS485 CAN CAN Digital isolator Digital isolator Interface translator Interface translator Fieldbus protection Fieldbus protection Protection Protection Memory Memory Bus termination Bus termination FLASH FLASH DDR DDR

Fieldbus interface

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Wired signal interfaces like RS485, CAN or interface translators are important for deterministic, secure and reliable communication between drive and external systems like PLC, motion controllers or other drives on the factory floor. Many industrial drives need to support Fieldbus solutions like Profibus, Modbus, Sercos or vendor specific protocols and need to meet the IEC61800-3 EMC immunity requirements for robust communication in harsh industrial environment. Isolated communication link is sometimes required to prevent ground loops.

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Isolation (6)
Isolated CAN transceivers
  • ISO1042—Isolated CAN transceiver with 70-V bus fault protection & flexible data rate
    Data sheet: PDF | HTML
  • ISO1050—Isolated 5-V CAN transceiver
    Data sheet: PDF | HTML
Isolated RS-485 transceivers
  • ISO1176—40-Mbps, half-duplex, isolated RS-485 & RS-422 transceiver
    Data sheet: PDF | HTML
  • ISO3082—200-Kbps, half-duplex, 2.5-kVrms isolated RS-485 & RS-422 transceiver
    Data sheet: PDF | HTML
Digital isolators
  • ISO6721R—General-purpose, dual-channel, 1/1 reverse pinout digital isolator
    Data sheet: PDF | HTML
  • ISO7842—Highest isolation rating, quad-channel, 2/2, reinforced digital isolator
    Data sheet: PDF | HTML
Interface (2)
LVDS, M-LVDS & PECL ICs
RS-485 & RS-422 transceivers
  • TIDA-00012—High Efficiency Isolated CAN & Profibus Interface Reference Design
    Test report: PDF Schematic: PDF
  • TIDA-00057—1Mbps Isolated RS-485 Reference Design
    Test report: PDF Schematic: PDF
  • TIDA-01281—Communication Module Reference Design for Functional Isolated RS-485, CAN and I2C Data Transmission
    Design guide: PDF Schematic: PDF
  • TIDEP-01032—EtherCAT® connected, single-chip, dual-servo motor drive reference design
    Design guide: PDF | HTML Schematic: PDF

Technical documentation

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Type Title Date
White paper Time Sensitive Networking for Industrial Automation (Rev. C) 31 Jul 2023
Application note Design for State Grid Corporation of China RS-485 Standard – THVD1500 30 Nov 2017
E-book Ein Techniker-Leitfaden für Industrieroboter-Designs 28 Oct 2020
White paper EtherNet/IP on TI's Sitara AM335x Processors (Rev. D) 28 Jul 2020
Application note DP83822 Energy Efficient Ethernet IEEE 802.3az 22 Aug 2016
Application note Signal Integrity vs. Transmission Rate and Cable Length for RS-485 Transceivers 21 Sep 2017
Application note How to Configure DP8386x for Ethernet Compliance Testing (Rev. C) PDF | HTML 18 Dec 2023
Application brief How to Improve Speed and Reliability of Isolated Digital Inputs in Motor Drives 18 Dec 2017
E-book E-book: An engineer’s guide to industrial robot designs 16 Nov 2020
Application note Low-Emission Designs With ISOW7841 Integrated Signal and Power Isolator (Rev. C) 11 May 2022
Application note Industrial Communication Protocols Supported on Sitara™ Processors (Rev. E) PDF | HTML 10 May 2024
Application note Ethernet PHY Configuration Using MDIO for Industrial Applications (Rev. A) 10 May 2022
White paper Fully integrated signal and power isolation – applications and benefits 04 Apr 2017
More literature Decentralized servo architecture webinar 01 Mar 2021
More literature Decentralized servo architecture webinar 01 Mar 2021
White paper An inside look at industrial Ethernet communication protocols (Rev. B) 01 Aug 2018

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